Trading Technologies International, Inc. v. Espeed, Inc. ( 2010 )


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  •      United States Court of Appeals for the Federal Circuit
    2008-1392, -1393, -1422
    TRADING TECHNOLOGIES INTERNATIONAL, INC.,
    Plaintiff-Appellant,
    v.
    ESPEED, INC., ECCO LLC,
    ECCOWARE LTD., and ESPEED INTERNATIONAL, LTD.,
    Defendants-Cross Appellants.
    Steven F. Borsand, Trading Technologies International, Inc., of Chicago, Illinois, argued
    for plaintiff-appellant. Of counsel on the brief were Paul H. Berghoff, Leif R. Sigmond, Jr.,
    Matthew J. Sampson, Michael D. Gannon, S. Richard Carden, Jennifer M.Kurcz and Paul A.
    Kafadar, McDonnell Boehnen Hulbert & Berghoff LLP, of Chicago,
    Illinois. Of counsel was George I. Lee.
    Gary A. Rosen, Law Offices of Gary A. Rosen, P.C., of Philadelphia, Pennsylvania,
    argued for defendants-cross appellants. Of counsel on the brief were George C. Lombardi,
    Raymond C. Perkins and James M. Hilmert, Winston & Strawn, LLP, of Chicago, Illinois. Of
    counsel were Ivan M. Poullaos, of Chicago, Illinois and John K. Hsu, of Washington, DC.
    Lora A. Moffatt, Salans LLP, of New York, New York, for amici curiae GL Trade SA, et al.
    With her on the brief was Walter Scott, Alston & Bird LLP, of New York, New York.
    Appealed from: United States District Court for the Northern District of Illinois
    Senior Judge James B. Moran
    United States Court of Appeals for the Federal Circuit
    2008-1392, -1393, -1422
    TRADING TECHNOLOGIES INTERNATIONAL, INC.,
    Plaintiff-Appellant,
    v.
    ESPEED, INC.,
    ECCO LLC, ECCOWARE LTD., and ESPEED INTERNATIONAL, LTD.,
    Defendants-Cross Appellants.
    Appeals from the United States District Court for the Northern District of Illinois
    in case no. 04-CV-5312, Senior Judge James B. Moran.
    ___________________________
    DECIDED: February 25, 2010
    ___________________________
    Before LOURIE, RADER, Circuit Judges, and CLARK, District Judge. 1
    Opinion for the court filed by Circuit Judge RADER, in which District Judge CLARK
    joins. Circuit Judge LOURIE concurs in the result. Concurring opinion filed by District
    Judge CLARK.
    RADER, Circuit Judge.
    The United States District Court for the Northern District of Illinois held that
    eSpeed, Inc., Ecco LLC, Eccoware Ltd., and eSpeed International Ltd. (collectively,
    “eSpeed”) infringed the asserted claims of 
    U.S. Patent No. 6,772,132
     (“’132 patent”)
    and 
    U.S. Patent No. 6,766,304
     (“’304 patent”) with one accused service product, but not
    1
    Honorable Ron Clark, District Judge, United States District Court for the Eastern
    District of Texas, sitting by designation.
    willfully. The district court further held that the two other accused products did not
    literally infringe and then precluded Trading Technologies International, Inc. (“TT”) from
    asserting infringement under the doctrine of equivalents. After giving the patents-in-suit
    a filing date back to the provisional application, the district court found that the on-sale
    bar of 
    35 U.S.C. § 102
    (b) did not apply. The district court also found no indefiniteness
    problem in the asserted claims.         Finally the district court detected no inequitable
    conduct during the prosecution of the patents-in-suit. Because this record discloses no
    reversible error, this court affirms.
    I.
    TT is the owner by assignment of the ’132 and ’304 patents. Both patents share
    a common provisional application filed on March 2, 2000. The United States Patent and
    Trademark Office (“PTO”) issued the ’132 patent on August 3, 2004, based on a June 9,
    2000 application. The PTO issued the ’304 patent on July 20, 2004, based on a June
    27, 2001 application.      The ’304 patent is a divisional of the ’132 patent.         The
    specifications of the patents are, for all relevant purposes, identical.
    The patents claim software for displaying the market for a commodity traded in
    an electronic exchange.       ’132 patent col.3 ll.11-16.    The software’s graphical user
    interface (“GUI”) includes “a dynamic display for a plurality of bids and for a plurality of
    asks in the market for the commodity and a static display of prices corresponding to the
    plurality of bids and asks.” 
    Id.
     The claimed invention facilitates more accurate and
    efficient orders in this trading environment. 
    Id.
     col.3 ll.21-24.
    Prior art computer trading displays showed the best bid price and the best ask
    price (together, “the inside market”) in fixed, predetermined grids. The best bid price is
    2008-1392, -1393, -1422                       2
    the highest price at which there is an offer to buy the contract. The best ask price is the
    lowest price at which there is an offer to sell the contract. The inside market is the focal
    point of trading activity because these offers most accurately reflect the current price of
    the commodity.
    Returning to the prior art, these displays had grids for the inside market that
    never changed. As the market fluctuated, however, the prices listed in those grids
    changed—often times very rapidly. To buy at the inside market, a trader, for example,
    placed the mouse cursor on the grids for the inside market and clicked the mouse. Of
    course, as traders sent bids and offers to the market, the price and quantity of the
    traded commodity changed. These changes altered the inside market. In the prior art
    era with fixed grids for the inside market, traders had a problem. A trader who wished
    to place an order at a particular price would miss that market opportunity if the inside
    market moved as the trader tried to enter an order. In a fast moving market, missing an
    intended price could happen often and have very significant economic consequences.
    The invention addressed the problem by implementing static price levels.
    Figures 3 and 4 of the ’132 patent illustrate the invention.
    2008-1392, -1393, -1422                      3
    ’132 patent, figs.3, 4. The figures display the bids and offers for a certain commodity in
    an electronic exchange. Column 1005 labeled “Prc” shows the contract prices. 
    Id.
     col.7
    ll.36-38. Column 1003 labeled “BidQ” and column 1004 labeled “AskQ” respectively
    show the bid quantities and the ask quantities for the associated price. 
    Id.
     col.7 ll.35-36.
    In Figure 3, the inside market labeled 1020 indicates the best bid price of 89 and the
    best ask price of 90.   
    Id.
     col.7 ll.40-42. A trader may enter an order by clicking in the
    bid or ask grid corresponding to the trader’s price. 
    Id.
     col.4 ll.9-19.
    Figure 4 displays the same market at a later time. The bid and ask quantities
    dynamically change in response to market fluctuations. 
    Id.
     col.7 ll.48-51. In Figure 4,
    the inside market has shifted upward such that the best bid price is now 92 and the best
    ask price is 93. 
    Id.
     col.8 ll.38-48. While the inside market has changed, the values in
    2008-1392, -1393, -1422                       4
    the price column remained fixed. 
    Id.
     col.8 ll.44-48. Over time, the inside market could
    shift to prices not currently displayed on the trader’s screen. 
    Id.
     col. 8 ll.49-51. In this
    case, the price column must be re-centered to keep the inside market in view. 
    Id.
     col.8
    ll.49-60.
    The claimed invention features static price levels. These unmoving figures have
    numerous advantages over the prior art. First, a trader can visually follow the market
    movement as the inside market shifts up and down along the price column. 
    Id.
     col.5
    ll.58-65.   Second, and perhaps most important, a trader has confidence in making an
    offer at the intended price. 
    Id.
     col.3 ll.3-4. Because the invention has static price levels,
    the order entry region will remain associated with the same price. Therefore, the trader
    does not need to worry about “clicking on” or entering an order at the instant after a
    price change. Thus, the invention prevents accidental orders at an unintended price.
    The patents tout that these improvements ensure fast and accurate execution of trades.
    
    Id.
     col.3 ll.21-24.
    eSpeed, Inc. provides an electronic exchange for trading commodities. It also
    designs and sells trading platforms for use with its electronic exchange. On August 12,
    2004, TT initiated this suit against eSpeed, Inc., alleging that eSpeed, Inc.’s trading
    platforms infringed TT’s patents. After eSpeed, Inc. acquired Ecco LLC in October
    2004, TT joined Ecco LLC in the suit. In December 2005, TT amended its complaint to
    join the subsidiaries eSpeed International, Inc. and EccoWare Ltd. This opinion refers
    to all defendants collectively as “eSpeed.”      TT asserts the following claims against
    eSpeed: claims 1, 2, 7, 14, 15, 20, 23-25, 27, 28, 40, 45, 47, 48, 50, and 52 of the ’132
    2008-1392, -1393, -1422                      5
    patent; and claims 1, 11, 14, 15, and 26 of the ’304 patent.              Claim 1 is the
    representative claim for both patents.
    Claim 1 of the ’132 patent:
    A method of placing a trade order for a commodity on an electronic
    exchange having an inside market with a highest bid price and a lowest
    ask price, using a graphical user interface and a user input device, said
    method comprising:
    setting a preset parameter for the trade order;
    displaying market depth of the commodity, through a dynamic
    display of a plurality of bids and a plurality of asks in the
    market for the commodity, including at least a portion of the
    bid and ask quantities of the commodity, the dynamic display
    being aligned with a static display of prices corresponding
    thereto, wherein the static display of prices does not move in
    response to a change in the inside market;
    displaying an order entry region aligned with the static display
    prices comprising a plurality of areas for receiving
    commands from the user input devices to send trade orders,
    each area corresponding to a price of the static display of
    prices; and
    selecting a particular area in the order entry region through single
    action of the user input device with a pointer of the user input
    device positioned over the particular area to set a plurality of
    additional parameters for the trade order and send the trade
    order to the electronic exchange.
    ’132 patent col.12 ll.1-27 (emphases added).
    Claim 1 of the ’304 patent:
    A method for displaying market information relating to and facilitating
    trading of a commodity being traded in an electronic exchange having an
    inside market with a highest bid price and a lowest ask price on a
    graphical user interface, the method comprising:
    dynamically displaying a first indicator in one of a plurality of
    locations in a bid display region, each location in the bid
    display region corresponding to a price level along a
    common static price axis, the first indicator representing
    quantity associated with at least one order to buy the
    commodity at the highest bid price currently available in the
    market;
    dynamically displaying a second indicator in one of a plurality of
    locations in an ask display region, each location in the ask
    2008-1392, -1393, -1422                     6
    display region corresponding to a price level along the
    common static price axis, the second indicator representing
    quantity associated with at least one order to sell the
    commodity at the lowest ask price currently available in the
    market;
    displaying the bid and ask display regions in relation to fixed price
    levels positioned along the common static price axis such
    that when the inside market changes, the price levels along
    the common static price axis do not move and at least one of
    the first and second indicators moves in the bid or ask
    display regions relative to the common static price axis;
    displaying an order entry region comprising a plurality of locations
    for receiving commands to send trade orders, each location
    corresponding to a price level along the common static price
    axis; and
    in response to a selection of a particular location of the order entry
    region by a single action of a user input device, setting a
    plurality of parameters for a trade order relating to the
    commodity and sending the trade order to the electronic
    exchange.
    ’304 patent col.12 ll.35-col.13 ll.3 (emphases added).
    TT accuses the following categories of eSpeed software of infringement: (1)
    Futures View, Autospeed Basis, and Price Ladder (collectively, “Futures View”); (2)
    Dual Dynamic and Ecco Scalper (“Dual Dynamic”); and (3) eSpeedometer and Ecco
    eSpeedometer (“eSpeedometer”). These accused products are identical in all relevant
    aspects. eSpeed concedes that Futures View satisfies all claim limitations. The parties
    dispute whether Dual Dynamic and eSpeedometer have a “static display of prices” or
    “static price axis.” This dispute turns on the way that the accused products re-center
    the price levels when the inside market moves away from the center of the display.
    eSpeed sold Futures View before the patents-in-suit issued. Dual Dynamics is a
    redesign of Futures View. Dual Dynamic has two re-centering features. First, a trader
    can click a mouse to manually re-center the price levels.        Second, Dual Dynamic
    automatically and instantaneously re-centers the price levels so as to move the inside
    2008-1392, -1393, -1422                     7
    market back to the field of the trader’s view if the inside market shifted a pre-determined
    number of ticks from the center of the display. Traders could not disable this automatic
    re-centering feature.     eSpeedometer is the second redesign of Futures View.
    eSpeedometer has an automatic re-centering feature only. Unlike Dual Dynamic, the
    entire display slowly drifts towards the center of the trader’s screen after each and every
    change in the inside market.
    eSpeed manufactured and sold the accused products at different times during
    the suit. eSpeed began selling Futures View long before TT’s patents-in-suit issued in
    August 2004.     Just before the hearing for a preliminary injunction in this case in
    December 2004, eSpeed pulled Futures View off the market and replaced it with Dual
    Dynamic. After the district court found that Dual Dynamic likely infringed the patents-in-
    suit, eSpeed launched eSpeedometer.
    In this case, the district court entered numerous orders on claim construction,
    motions for summary judgment, motions in limine, and motions for a judgment as a
    matter of law (“JMOL”). After holding a three-day claim construction hearing, the district
    court issued a claim construction order. Of particular importance to this appeal, the
    district court construed the word “static” in the limitation “static display of prices” in the
    ’132 patent and in the limitation “common static price axis” in the ’304 patent. Based on
    the claim construction, eSpeed moved for summary judgment of non-infringement for
    Dual Dynamic and eSpeedometer.
    The district court found that neither product literally infringed. The district court
    also found that Dual Dynamic did not infringe under the doctrine of equivalents because
    finding otherwise would vitiate the claim element “static.” The district court held that
    2008-1392, -1393, -1422                       8
    prosecution history estoppel precluded application of the doctrine of equivalents as to
    eSpeedometer.      Therefore, the district court granted summary judgment of non-
    infringement as to both the Dual Dynamic and eSpeedometer redesigns.
    In September and October 2007, the district court held a four-week jury trial.
    During the trial, the district court granted TT’s motion in limine to preclude eSpeed from
    asserting an on-sale bar defense at trial. The district court also granted-in-part TT’s
    motion in limine to preclude expert testimony that the construction of “single action of a
    user input device” was indefinite. On October 10, 2007, the jury found that Futures
    View willfully infringed the patents-in-suit. The jury also awarded the patents-in-suit the
    benefit of their provisional application’s filing date.   Based on that finding, the jury
    determined that the prior art did not anticipate or render obvious the claimed invention.
    The jury awarded TT $3,500,000 in damages based on a reasonable royalty.
    After the jury trial, the district court held a two-day bench trial on inequitable
    conduct. Based on that record, the trial court ruled that eSpeed did not show that TT
    engaged in inequitable conduct. The district court also denied eSpeed’s JMOL motions
    on validity, indefiniteness, priority date, and the patent misuse defense, but vacated the
    jury’s finding of willful infringement and remitted the damages award to $2,539,468.
    The district court further denied TT’s motions for enhanced damages and for attorney
    fees.
    The district court entered its final judgment on May 22, 2008. Both eSpeed and
    TT appealed to this court on May 27, 2008. The judgment on which TT based its
    appeal was not final at that time. The district court then re-entered its final judgment
    nunc pro tunc on June 13, 2008. Because this court ruled that appellate jurisdiction
    2008-1392, -1393, -1422                      9
    ripened upon the entry of the judgment nunc pro tunc, it has jurisdiction under 
    28 U.S.C. § 1295
    (a).
    II.
    Both TT and eSpeed raise numerous issues on appeal. TT’s appeal focuses on
    patent infringement. First, TT appeals the claim construction of “common static price
    axis” and “a static display of price.”   Second, TT argues that Dual Dynamic and
    eSpeedometer infringe the patents-in-suit based on TT’s proposed claim construction.
    Third, TT asserts that a finding that Dual Dynamic infringes under the doctrine of
    equivalents would not vitiate the claim element “static.”      Fourth, TT argues that
    prosecution history estoppel does not preclude showing that eSpeedometer infringes
    under the doctrine of equivalents. Finally, TT claims that the district court incorrectly
    granted eSpeed’s JMOL motion on willful infringement.
    eSpeed’s cross-appeal focuses on patent validity. First, eSpeed argues that the
    patents-in-suit do not deserve priority back to March 2, 2000—the filing date of the
    provisional application.   Second, eSpeed claims that the patents-in-suit are invalid
    under the on-sale bar because Harris Brumfield, one of the inventors of the patents-in-
    suit, entered into a sales contract with TT more than one year before March 2, 2000.
    Third, eSpeed argues that the term “single action of a user input device” is indefinite.
    Finally, eSpeed claims that TT engaged in inequitable conduct by failing to submit
    Brumfield’s custom software embodying the patented invention to the PTO during the
    prosecution of the patents-in-suit.
    2008-1392, -1393, -1422                    10
    III.
    A.
    The district court granted summary judgment of non-infringement for the Dual
    Dynamic and eSpeedometer products. This court reviews a grant of summary judgment
    without deference. O2 Micro Int’l, Ltd. v. Monolithic Power Sys., 
    467 F.3d 1355
    , 1359
    (Fed. Cir. 2006). Evaluation of summary judgment of non-infringement requires two
    steps—proper claim construction and comparison of those claims to the accused
    product. Abbott Labs. v. Sandoz, Inc., 
    566 F.3d 1282
    , 1288 (Fed. Cir. 2009). Because
    the parties dispute the meaning of terms in the asserted claims, this court reviews the
    district court’s claim construction order under the requirements of Markman v. Westview
    Instruments, Inc., 
    517 U.S. 370
     (1996).
    The Supreme Court in Markman held that “the construction of a patent, including
    terms of art within its claim, is exclusively within the province of the court.” 
    Id. at 372
    .
    The Supreme Court recognized that claim construction “falls somewhere between a
    pristine legal standard and a simple historical fact.” 
    Id. at 388
     (quoting Miller v. Fenton,
    
    474 U.S. 104
    , 114 (1985)). Although claim construction is not a purely legal matter, the
    Supreme Court found “sufficient reason to treat construction of terms of art like many
    other responsibilities that we cede to a judge in the normal course of trial,
    notwithstanding its evidentiary underpinnings.” Id. at 390.
    Nevertheless, in Cybor Corp. v. FAS Technologies, Inc., 
    138 F.3d 1448
     (Fed. Cir.
    1998) (en banc), this court interpreted Markman as holding that claim construction was
    solely a question of law, which this court should review without deference. 
    Id. at 1451
    .
    The question presented before the Supreme Court was “whether the interpretation of a
    2008-1392, -1393, -1422                     11
    so-called patent claim . . . is a matter of law reserved entirely for the court, or subject to
    a Seventh Amendment guarantee that a jury will determine the meaning of any disputed
    term of an art about which expert testimony is offered.” Markman, 
    517 U.S. at 372
    .
    Although the Supreme Court addressed only the role of the trial court in claim
    construction, this court understood that “the Supreme Court was addressing under
    which category, fact or law, claim construction should fall.” Cybor, 
    138 F.3d at 1455
    .
    This court concluded that “[n]othing in the Supreme Court’s opinion supports the view
    that the Court endorsed a silent, third option—that claim construction may involve
    subsidiary or underlying questions of fact.” 
    Id.
    An examination of the Supreme Court’s ruling in Markman shows multiple
    references to factual components of claim construction:
    •   “[C]onstruing a term of art following receipt of evidence” is “a
    mongrel practice.” Id. at 378.
    •   Claim construction “falls somewhere between a pristine legal
    standard and a simple historical fact.” Id. at 388.
    •   “We accordingly think there is sufficient reason to treat construction
    of terms of art like many other responsibilities that we cede to a
    judge in the normal course of trial, notwithstanding its evidentiary
    underpinnings.” Id. at 390.
    These references in the Supreme Court opinion leaves this court stranded
    between the language in the Court’s decision and the language in this court’s Cybor
    decision.
    In order to resolve this case, this court must confront findings by the trial court
    about the meaning of the disputed claim term “static.” In reaching the meaning of that
    term, the trial court explored and made findings about the technical background of the
    invention—the inventive features and the timing of those features against the backdrop
    of the prior art. In addition, the district court determined the meaning that an artisan of
    2008-1392, -1393, -1422                       12
    ordinary skill in this discipline would assign the term “static.” The trial court also made
    findings about the understanding of such an ordinary artisan about the metes and
    bounds of the asserted claims.        In still another factual setting, the district court
    determined the way that the ordinary artisan would interpret the patent applicant’s
    statements made to the PTO examiner during the prosecution of the patents-in-suit.
    These factual determinations about the timing and nature of the history of the patent
    acquisition process also informed the trial court’s claim construction. In sum, claim
    construction involves many technical, scientific, and timing issues that require full
    examination of the evidence and factual resolution of any disputes before setting the
    meaning of the disputed terms.
    Of course, as the Supreme Court repeatedly clarified in Markman, the trial court
    occupies the best vantage point and possesses the best tools to resolve those
    evidentiary questions:
    •   “[A] jury’s capabilities to evaluate demeanor to sense the
    mainsprings of human conduct or to reflect community standards
    are much less significant than a trained ability to evaluate the
    testimony in relation to the overall structure of the patent.” Id. at
    389-90 (citations and internal quotation marks omitted).
    •   “The decisionmaker vested with the task of construing the patent is
    in the better position to ascertain whether an expert’s proposed
    definition fully comports with the specification and claims and so will
    preserve the patent’s internal coherence.” Id. at 390.
    Despite the Supreme Court’s emphasis on the trial court’s central role for claim
    construction, including the evaluation of expert testimony, this court may not give any
    deference to the trial court’s factual decisions underlying its claim construction. This
    court’s prior en banc decision requires a review of the district court’s claim construction
    without the slightest iota of deference. See Cybor, 
    138 F.3d at 1451
    .
    2008-1392, -1393, -1422                     13
    B.
    To construe a claim, courts must determine the meaning of disputed terms from
    the perspective of one of ordinary skill in the pertinent art at the time of filing.
    Chamberlain Group, Inc. v. Lear Corp., 
    516 F.3d 1331
    , 1335 (Fed. Cir. 2008). The
    claim terms “are generally given their ordinary and customary meaning.” Phillips v.
    AWH Corp., 
    415 F.3d 1303
    , 1312 (Fed. Cir. 2005) (en banc) (quoting Vitronics Corp. v.
    Conceptronic, Inc., 
    90 F.3d 1576
    , 1582 (Fed. Cir. 1996)). “[T]he claims themselves
    provide substantial guidance as to the meaning of particular claim terms.” Id. at 1314.
    But the claims “must be read in view of the specification, of which they are a
    part.” Markman v. Westview Instruments, Inc., 
    52 F.3d 967
    , 979 (Fed. Cir. 1995) (en
    banc), aff’d, 
    517 U.S. 370
     (1996). A patent’s specification “is always highly relevant to
    the claim construction analysis.” Phillips, 415 F.3d at 1315 (quoting Vitronics, 
    90 F.3d at 1582
     (Fed. Cir. 1996)). When consulting the specification to clarify the meaning of
    claim terms, courts must not import limitations into the claims from the specification.
    Abbot Labs., 
    566 F.3d at 1288
    .        Therefore, when the specification uses a single
    embodiment to enable the claims, courts should not limit the broader claim language to
    that embodiment “unless the patentee has demonstrated a clear intention to limit the
    claim scope using ‘words or expressions of manifest execution or restriction.’” Liebel-
    Flarsheim Co. v. Medrad, Inc., 
    358 F.3d 898
    , 905 (Fed. Cir. 2004) (quoting Teleflex, Inc.
    v. Ficosa N. Am. Corp., 
    299 F.3d 1313
    , 1327 (Fed. Cir. 2002)). In addition, “other
    claims of the patent . . . can also be valuable sources of enlightenment as to the
    meaning of a claim term.” 
    Id.
     (citing Vitronics, 
    90 F.3d at 1582
    ).
    2008-1392, -1393, -1422                     14
    In claim construction “a court ‘should also consider the patent’s prosecution
    history . . . .’” Phillips, 415 F.3d at 1318 (quoting Markman, 
    52 F.3d at 980
    ). “[T]he
    prosecution history can often inform the meaning of the claim language by
    demonstrating how the inventor understood the invention and whether the inventor
    limited the invention in the course of prosecution, making the claim scope narrower than
    it would otherwise be.” 
    Id.
     (citing Vitronics, 
    90 F.3d at 1582-83
    ). For example, “a
    patentee may, through a clear and unmistakable disavowal in prosecution history,
    surrender certain claim scope to which he would otherwise have an exclusive right by
    virtue of the claim language.” Vita-Mix Corp. v. Basic Holding, Inc., 
    581 F.3d 1317
    ,
    1324 (Fed. Cir. 2009) (citations omitted).       At the same time, because prosecution
    history represents an ongoing negotiation between the PTO and the inventor, “it often
    lacks the clarity of the specification and thus is less useful for claim construction
    purposes.” Netcraft Corp. v. eBay, Inc., 
    549 F.3d 1394
    , (Fed. Cir. 2008).
    TT disputes the construction of the word “static” in the phrase “static display of
    prices” in the ’132 patent and in the phrase “common static price axis” in the ’304
    patent. All asserted claims of the ’132 patent include the limitation “static display of
    prices.” Likewise, all asserted claims of the ’304 patent include the limitation “common
    static price axis.” TT and eSpeed agree that the difference in terminology between
    “static display of prices” and “common static price axis” is immaterial.
    The district court construed “static display of prices” in the ’132 patent as “a
    display of prices comprising price levels that do not change positions unless a manual
    re-centering command is received.” Trading Techs. Int’l, Inc. v. eSpeed, Inc., 
    2006 U.S. Dist. LEXIS 80153
    , at *11 (N.D. Ill. Oct. 31, 2006) (emphasis added). The district court
    2008-1392, -1393, -1422                     15
    similarly construed “common static price axis” as “a line comprising price levels that do
    not change positions unless a manual re-centering command is received and where the
    line of prices corresponds to at least one bid value and one ask value.” 
    Id.
     (emphasis
    added). A “price level” is “a level on which a designated price or price representation
    resides.” 
    Id. at *15
    . The district court later clarified that “a static condition – requires
    permanency” and, thus, “the price axis never changes positions unless by manual re-
    centering or re-positioning.” Trading Techs. Int’l, Inc. v. eSpeed, Inc., 
    2007 U.S. Dist. LEXIS 12965
    , at *20, 22 (N.D. Ill. Feb. 21, 2007) (emphasis added). Under the district
    court’s construction, the patents-in-suit only cover software with a manual re-centering
    feature and without automatic re-centering feature.       Given that Dual Dynamic and
    eSpeedometer automatically re-center the price columns in response to changes in the
    inside market, TT argues for a broader construction of the word “static” (i.e., “static”
    does not mean immovable).
    The inventors acted as their own lexicographers and defined the word “static:”
    The values in the price column are static; that is, they do not normally
    change positions unless a re-centering command is received (discussed in
    detail later).
    ’132 patent col.7 ll.46-48; ’304 patent col.7 ll.65-67.     The district court made two
    important changes to this express definition in construing the word “static.” First, the
    district court added the word “manual” in front of the term “re-centering command.”
    Second, it deleted the word “normally.”        The district court’s definition may seem
    narrower than the inventors’ express definition at first glance. However, the claims, the
    rest of the specification, and the prosecution history support the district court’s
    definition.   Therefore, this court, after reconstruing this term based on its own
    2008-1392, -1393, -1422                     16
    understanding of the claims, specification, prosecution history, and record, agrees with
    the district court’s claim construction of the word “static.”
    In the first place, the “re-centering command” must indeed occur as a result of a
    manual entry. The specification shows that the inventors defined the term “static” in the
    specification.   Notably, that definition expressly promises to discuss “a re-centering
    command . . . later” in the specification. 
    Id.
         From that point forward, the specification
    only discusses manual re-centering commands.                The specification contains no
    reference to automatic re-centering. Perhaps in response to the promise to discuss re-
    centering later, the patents describe the invention as follows:
    As the market ascends or descends the price column, the inside market
    might go above or below the price column displayed on a trader’s screen.
    Usually a trader will want to be able to see the inside market to assess
    future trades. The system of the present invention addresses this problem
    with a one click centering feature.
    ’132 patent col.8 ll.49-54; ’304 patent col.9 ll.14-19 (emphasis added). This reference to
    “the present invention” strongly suggests that the claimed re-centering command
    requires a manual input, specifically, a mouse click. See Honeywell Int’l, Inc. v. ITT
    Indus., 
    452 F.3d 1312
    , 1318 (Fed. Cir. 2006) (concluding that the invention was limited
    to a fuel filter because the specification referred to the fuel filter as “this invention” and
    “the present invention”).
    This court recognizes that this interpretation relies heavily on the specification
    and risks reading improperly a preferred embodiment into the claim.           See Saunders
    Group, Inc. v. Comfortrac, Inc., 
    492 F.3d 1326
    , 1332 (Fed. Cir. 2007) (holding that claim
    scope is not limited to the disclosed embodiments “unless the patentee has
    demonstrated a clear intention to [do so]”). This court takes some comfort against this
    2008-1392, -1393, -1422                       17
    risk from the inventors’ use of the term “the present invention” rather than “a preferred
    embodiment” or just “an embodiment.” The inventors’ own specification strongly
    suggests that the claimed re-centering feature is manual.
    Because an inventor must evince a “clear intention” to limit the claim terms to a
    specification embodiment, this court examines other claims to detect any contrary
    intentions. In that respect, this court observes that all claims of the ’132 patent have a
    “wherein” clause explaining that “the static display of prices does not move in response
    to a change in the inside market.” ’132 patent col.12 l.1–col.16 l.57. Although the
    “wherein” clause does not exclude automatic re-centering from the claim scope (it does
    not exclude software that automatically re-centers whenever the trader enters an order,
    for example), it expressly excludes software that automatically re-centers when the
    inside market changes.       These clauses thus support the district court’s claim
    construction.
    TT argues that even if this court construes the “re-centering command” as
    manual, this court cannot limit the claims to only the enumerated elements (i.e., manual
    re-centering command).     According to TT, because the claims use the transitional
    phrase “comprising,” they also cover un-recited features such as automatic re-centering.
    To the contrary, automatic re-centering is not an additional feature, but rather negates a
    claimed requirement that the price level remains static and does not move.           See
    Spectrum Int’l v. Sterilite Corp., 
    164 F.3d 1372
    , 1380 (Fed. Cir. 1998) (“‘Comprising’ is
    not a weasel word with which to abrogate claim limitations.”). A price level that only
    moves in response to a manual re-centering command cannot also move in response to
    2008-1392, -1393, -1422                    18
    an automatic re-centering command. Thus, this court construes the claims to require a
    manual re-centering command.
    The claims also contain a limitation that “the price axis never changes positions
    unless by manual re-centering or re-positioning.”      Trading Techs., 
    2007 U.S. Dist. LEXIS 12965
    , at *22. The district court found that the ordinary and customary meaning
    of “static” was “motionless: not moving or changing, or fixed in position.”       Trading
    Techs., 
    2006 U.S. Dist. LEXIS 80153
    , at *11. TT did not present evidence or dispute
    that a person of ordinary skill in the art would understand the word “static” differently.
    Moreover, allowing the price axis to automatically change positions would defy the
    invention’s goal to “ensure[] fast and accurate execution of trades.” ’132 patent col.3
    ll.5-6. The invention would present the same problem as the prior inventions if the price
    axis moved automatically even in rare instances. The “static display of prices” could
    automatically re-center just as the trader was getting ready to execute a trade, causing
    the trader to miss the intended price.
    Also, the inventors jettisoned the word “normally” during prosecution.   The PTO
    examiner initially rejected the claims because the term “‘static display’ [was] vague and
    indefinite.” The examiner requested the applicants “to claim ‘to what extent’, ‘to what
    degree’, and ‘on what basis’ the displays ‘change.’”        In response, the applicants
    explained that “the values in the price column . . . do not change (unless a re-centering
    command is received).” The examiner allowed the claims at least partly based on the
    understanding that the price column did not re-center itself automatically. The manual
    re-centering feature also avoided the possibility of mistakes when the price column
    moved automatically at the same time a trader wished to make a purchase. Of course,
    2008-1392, -1393, -1422                    19
    traders might make mistakes despite precautions built into the software. Nonetheless,
    to “provide the trader with improved efficiency and versatility in placing,” ’132 patent
    col.3 ll.21-24, the price column cannot shift unexpectedly.
    This court also addresses claim 55 of the ‘132 patent, a dependent claim from
    claim 1:
    The method of claim 1 wherein the market depth is based on an exchange
    order book and the static display of prices never moves in response to a
    price change in the exchange order book relating to a price which is
    displayed.
    
    Id.
     col.16 ll.52-55 (emphasis added). TT argues that construing “static” to mean the
    price axis never moves would render dependent claim 55 superfluous. To the contrary,
    claim 55 adds another limitation to claim 1, namely, that the market depth is based on
    “an exchange order book.” Moreover, problems with any overlapping claim scope “will
    be overcome by a contrary construction dictated by the written description or
    prosecution history.”     Regents v. Dakocytomation, 
    517 F.3d 1367
    , 1375 (Fed. Cir.
    2008). The invention’s contribution to the prior art, its specification, and its prosecution
    history show that the static display of prices cannot move without a manual re-centering
    command from the trader.        Accordingly, the district court correctly construed the
    disputed word “static.”
    Because Dual Dynamic and eSpeedometer systems have mandatory re-
    centering features, these products do not infringe the patents-in-suit based on the
    district court’s construction of the word “static.” With that feature, these products lack
    “price levels that do not change positions unless a manual re-centering command is
    received.”   This court affirms the district court’s finding that Dual Dynamic and
    eSpeedometer do not literally infringe the patents-in-suit.
    2008-1392, -1393, -1422                     20
    IV.
    The district court prevented TT from relying on the doctrine of equivalents. The
    trial court reasoned that claim vitation barred assertion of infringement by equivalents
    against the Dual Dynamic system. The trial court reasoned that prosecution history
    estoppel barred TT from asserting equivalents against the eSpeedometer system. The
    Supreme Court discussed these “legal limitations on the application of the doctrine of
    equivalents” in Warner-Jenkinson Co., Inc. v. Hilton Davis Chemical Co., 
    520 U.S. 17
    ,
    39 n.8 (1997). Under the “all-elements rule,” a patentee may not assert “a theory of
    equivalen[ce] [that] would entirely vitiate a particular claim element.”       
    Id.
       Under
    prosecution history estoppel, a patentee may not seek to recapture as an equivalent
    subject matter surrendered during prosecution.       
    Id.
       This court reviews both legal
    limitations without deference. Lockheed Martin Corp. v. Space Sys./Loral, Inc., 
    324 F.3d 1308
    , 1318 (Fed. Cir. 2003).
    The all-elements rule requires this court to consider “the totality of circumstances
    of each case and determine whether the alleged equivalent can be fairly characterized
    as an insubstantial change from the claimed subject matter without rendering the
    pertinent limitation meaningless.” Freedman Seating Co. v. Am. Seating Co., 
    420 F.3d 1350
    , 1359 (Fed. Cir. 2005). In other words, this rule empowers a court to perform
    again the standard “insubstantial variation” test for equivalency, but this time as a
    question of law. Claim vitiation applies when there is a “clear, substantial difference or
    a difference in kind” between the claim limitation and the accused product. 
    Id. at 1360
    .
    It does not apply when there is a “subtle difference in degree.” Id.
    2008-1392, -1393, -1422                     21
    In this case, the trial court considered whether an occasional automatic re-
    centering of the price axis in Dual Dynamic is equivalent to “never chang[ing] positions
    unless by manual re-centering or re-positioning.”        The court determined that the
    automatic re-centering would render the claim limitation “static”—synonymous with only
    manual re-centering—meaningless. The trial court’s construction of the claim limitation
    “static” specifically excludes any automatic re-centering.     See SciMed Life Sys. v.
    Advanced Cardiovacsular Sys., 
    242 F.3d 1337
    , 1347 (Fed. Cir. 2001) (“[I]f a patent
    states that the claimed device must be ‘non-metallic,’ the patentee cannot assert the
    patent against a metallic device on the ground that a metallic device is equivalent to a
    non-metallic device.”).
    On appeal, this court observes that the Dual Dynamic system may only
    automatically re-center its price axis once or twice per trading day. Still this occasional
    automatic re-centering is not a “subtle difference of degree” because the claim forbids
    all automatic re-centering.   This court concludes that the occasional automatic re-
    centering is not merely an insubstantial variation. The relevant standard for measuring
    the difference in this instance is not the frequency of automatic re-centering. Instead
    this court must detect the difference between a price axis that moves only in response
    to the trader’s instruction and a price axis that adjusts itself without prompting. This
    difference is not subtle. Rather, as discussed above, this difference lies at the heart of
    the advantages of the patented invention over prior art.        Specifically the invention
    “ensures fast and accurate execution of trades.”         ’132 patent col.3 ll.5-6.    Dual
    Dynamic’s automatic re-centering feature still presents the potential problem of the prior
    art that allowed the inside market price to move while a trader was trying to secure a
    2008-1392, -1393, -1422                     22
    deal. Thus Dual Dynamic’s automatic re-centering feature is substantially different from
    the claimed invention and cannot fall within the scope of the claims under the doctrine of
    equivalents without doing violence to the “static” claim element. Accordingly, this court
    affirms the trial court’s judgment that TT cannot rely on the doctrine of equivalents to
    show that Dual Dynamic infringes.
    This court further agrees with the district court that prosecution history estoppel
    precludes TT from relying on the doctrine of equivalents to prove the eSpeedometer
    system infringes. After the USPTO issued a notice of allowance, TT submitted for the
    first time a prior art reference that described a static price display and petitioned to have
    the application withdrawn from issuance. TT then amended claim 22 of the ’132 patent,
    which ultimately issued as claim 1, as follows (deletions marked in brackets, additions
    underlined):
    displaying [the] market depth of [a] the commodity [traded in a market],
    through a dynamic display of a plurality of bids and a plurality of asks in
    the market for the commodity, including at least a portion of the bid and
    ask quantities of the commodity, the dynamic display being aligned with a
    static display of prices corresponding thereto, wherein the static display of
    prices does not move in response to a change in the inside market;
    Similarly, TT amended claim 41 of the ’304 patent, which ultimately issued as claim 1,
    as follows:
    displaying the bid and ask display regions in relation to fixed price levels
    positioned along the common static price axis such that when the inside
    market changes, the price levels along the common static price axis do
    not move and at least one of the first and second indicators [can] moves in
    the bid [and] or ask display regions relative to the common static price axis
    [when the inside market changes];
    The PTO examiner then allowed the claims. The amendments clarified that the claimed
    price levels “do not move” when the inside market changes. Therefore, the applicants
    2008-1392, -1393, -1422                      23
    clearly surrendered a GUI with price levels that move in response to inside market
    changes.
    TT argues that amending the claims to require that the price levels “do not move”
    did not narrow the claim scope, because the claims already included the term “static,”
    which the district court has construed to mean that the price levels “do not move.” This
    contention, however, is circular. Placed in the proper context of the timing for claim
    construction and prosecution history estoppel, the district court properly prevented the
    recapture of surrendered subject matter.        The trial court construed the claims as
    amended and properly limited the claims to manual re-centering. Prosecution history
    estoppel applies at the time of infringement to determine whether the applicant
    surrendered claim scope during prosecution. See Warner-Jenkinson, 
    520 U.S. at
    39
    n.8. TT’s argument assumes that the trial court and this court would have construed
    “static” the same without the full prosecution history. This court need not engage in this
    conjecture because the inventors narrowed the claim scope during prosecution. Thus,
    both claim construction and prosecution history estoppel operate in this case with
    similar limited results. The first limits the claims to manual re-centering. The latter
    prevents TT from asserting that eSpeedometer is an equivalent, because its price level
    automatically drifts towards the center of the display after every change in the inside
    market. Thus, during prosecution, the inventors surrendered any subject matter that
    moves automatically.    Accordingly, this court affirms as a matter of law the district
    court’s finding that Dual Dynamic and eSpeedometer do not infringe the patents-in-suit
    under the doctrine of equivalents.
    2008-1392, -1393, -1422                    24
    V.
    The district court granted eSpeed’s motion for JMOL that it did not willfully
    infringe the patents-in-suit. This court reviews a district court’s grant of a motion for
    JMOL under the law of the regional circuit, in this case the United States Court of
    Appeals for the Seventh Circuit. Harris Corp. v. Ericsson Inc., 
    417 F.3d 1241
    , 1248
    (Fed. Cir. 2005). The Seventh Circuit reviews a district court’s grant of a JMOL motion
    without deference, while viewing all the evidence in the light most favorable to the
    nonmoving party. Harper v. Albert, 
    400 F.3d 1052
    , 1061 (7th Cir. 2005). JMOL is
    proper when “a party has been fully heard on an issue and there is no legally sufficient
    evidentiary basis for a reasonable jury to find for that party on that issue." Fed. R. Civ.
    P. 50(a).
    In In re Seagate Technology, LLC, 
    497 F.3d 1360
    , 1371 (Fed. Cir. 2007) (en
    banc), this court held that “proof of willful infringement permitting enhanced damages
    requires at least a showing of objective recklessness.” “[A] patentee must show by
    clear and convincing evidence that the infringer acted despite an objectively high
    likelihood that its actions constituted infringement of a valid patent.” 
    Id.
     The patentee
    must also show that the infringer knew or should have known of this objectively high
    likelihood. 
    Id.
    TT’s argument focuses on eSpeed’s post-issuance activities from August to
    December 2004, during which eSpeed’s customers continued to use Futures View to
    trade on its electronic exchange.     The parties do not dispute that eSpeed began
    redesigning Futures View immediately after this suit commenced and replaced Futures
    View with the redesigned Dual Dynamic by the end of December 2004.                 Prompt
    2008-1392, -1393, -1422                     25
    redesign efforts and complete removal of infringing products in a span of a few months
    suggest that eSpeed was not objectively reckless.
    Also, TT offered no evidence that eSpeed sold Futures View to new customers
    during the contested time period. Nor did TT offer any evidence that eSpeed could
    have disabled the infringing feature or removed Futures View that was already installed
    on the customers’ computers. eSpeed replaced Futures View with Dual Dynamic via a
    mandatory software update in December 2004; however, this does not prove that
    eSpeed could have updated its software before this date. The record shows that some
    customers paid monthly license fees on Futures View after August 2004. Nonetheless,
    eSpeed was merely receiving monthly installments on licenses that it had previously
    sold. Moreover, eSpeed could not have terminated these licenses without providing
    three months advance notice.
    Because the record shows no objective recklessness during the contested period
    of time, no reasonable jury could have found that eSpeed willfully infringed the patents-
    in-suit. Therefore, this court affirms the district court’s grant of JMOL motion on willful
    infringement.
    VI.
    The parties dispute whether the limitation “single action of a user input device” is
    indefinite as construed. A patent specification must “conclude with one or more claims
    particularly pointing out and distinctively claiming the subject matter which the applicant
    regards as his invention.”     
    35 U.S.C. § 112
    , ¶ 2.      “The statutory requirement of
    particularity and distinctness in claims is met only when [the claims] clearly distinguish
    what is claimed from what went before in the art and clearly circumscribe what is
    2008-1392, -1393, -1422                     26
    foreclosed from future enterprise.” United Carbon Co. v. Binney & Smith Co., 
    317 U.S. 228
    , 236 (1942). However, absolute clarity is not required. Datamize, LLC v. Plumtree
    Software, Inc., 
    417 F.3d 1342
    , 1347 (Fed. Cir. 2005). Only claims “not amenable to
    construction” or “insolubly ambiguous” are indefinite. 
    Id.
     (citation omitted). This court
    reviews definiteness without deference. AllVoice Computing v. Nuance Commc’ns, 
    504 F.3d 1236
    , 1240 (Fed. Cir. 2007).
    This court agrees with the district court that the claim term as construed is
    sufficiently definite. The district court construed “single action of a user input device” to
    mean “an action by a user within a short period of time that may comprise one or more
    clicks of a mouse button or other input device.” Trading Techs., 
    2006 U.S. Dist. LEXIS 80153
    , at *11. In this context, the word “an action” means one user action. An action
    may include multiple sub-elements as long as the user views all sub-elements as one
    user action (e.g., double-click comprising of two single-clicks is “an action”).        The
    invention is different from prior art inventions that required a trader to click on multiple
    locations before submitting the order. The district court’s construction correctly sets
    objective boundaries by distinguishing the invention from multiple-action systems found
    in the prior art.
    Moreover, one of ordinary skill in the art would distinguish user actions as
    singular or multiple. The claim construction provides an example of a singular action—
    one or more clicks of a mouse button. Importantly, the district court’s construction
    requires that the “action” must be done in a “short period of time.” Although a “short
    period of time” may vary slightly from one circumstance to the next, an artisan of
    ordinary skill would not find the term insolubly ambiguous. In fact, eSpeed’s expert
    2008-1392, -1393, -1422                      27
    agreed that the following actions are all single actions: a single mouse click, double
    mouse clicks, a single key press, and a modal shift on the keyboard (such as
    combination of the Control key or the Alt key with another key). eSpeed’s expert also
    agreed that other actions, such as a right click followed by a left click, and pressing two
    keys in sequential order, constituted multiple actions. Given the record and the trial
    court’s definition of the term “single action,” this court agrees that the claim terms set
    forth the boundaries of the claim scope.
    VII.
    The jury found that the patents-in-suit claimed priority to their provisional
    application, which was filed on March 2, 2000. Every claim of the patents-in-suit recites
    use of a “single action of a user input device.” In contrast, the provisional application
    never refers to a “single action of a user input device,” but instead refers solely to “a
    single click of a computer mouse.”
    Claims enjoy the earlier filing date only if the provisional application provided
    adequate written description under 
    35 U.S.C. § 112
    , ¶ 1.          New Railhead Mfg. v.
    Vermeer Mfg., 
    298 F.3d 1290
    , 1294 (Fed. Cir. 2002). The “prior application itself must
    describe an invention . . . in sufficient detail that one skilled in the art can clearly
    conclude that the inventor invented the claimed invention as of the filing date sought.”
    Lockwood v. Am. Airlines, 
    107 F.3d 1565
    , 1572 (Fed. Cir. 1997).            Therefore, the
    provisional application must describe the invention in such a way that one of ordinary
    skill in the art “would understand that the genus that is being claimed has been
    invented, not just the species of a genus.” Carnegie Mellon Univ. v. Hoffman-La Roche,
    Inc., 
    541 F.3d 1115
    , 1124 (Fed. Cir. 2008).
    2008-1392, -1393, -1422                     28
    eSpeed alleges that the district court erred in finding that one of ordinary skill in
    the art would understand the provisional application to mean that traders could enter
    orders through a “single action of a user input device.” Specifically, eSpeed disputes
    the district court’s summary judgment ruling, jury instruction, decision to admit expert
    testimony, and JMOL ruling on priority date.
    First, eSpeed argues that the district court incorrectly denied its motion for
    summary judgment on the ground that there was a triable issue as to whether the
    provisional application’s disclosure was adequate. This court reviews a denial of a
    motion for summary judgment for an abuse of discretion.             Cross Med. Prods. v.
    Medtronic Sofamor Danek, Inc., 
    424 F.3d 1293
    , 1302 (Fed. Cir. 2005). On summary
    judgment, the parties’ experts disagreed that the provisional application showed
    possession of forms of order entry other than “a single click of a computer mouse.”
    Harris Brumfield, one of the inventors of the patents-in-suit, suggested that “one click of
    a mouse” is merely one way of entering orders on the exchange. Therefore, the parties
    created a dispute of material fact about whether the disclosure of a species, i.e., “one
    click of a mouse,” was sufficient to show that the inventors possessed the genus, i.e.,
    “single action of a user input device.” The district court did not abuse its discretion by
    determining that the parties’ irreconcilable testimony created a dispute of material fact,
    precluding a grant of summary judgment on this issue.
    Second, eSpeed also argues that the court incorrectly instructed the jury on the
    law of written description. This court reviews “the legal sufficiency of jury instructions on
    an issue of patent law without deference to the district court."         Amgen Inc. v. F.
    Hoffmann-La Roche, Ltd., 
    580 F.3d 1340
    , 1368 (Fed. Cir. 2009) (citation omitted). In its
    2008-1392, -1393, -1422                      29
    brief, eSpeed quotes one sentence from the jury instruction. The district court’s jury
    instruction was much longer and included the following sentence:
    To provide adequate support you must find that the Provisional Application
    shows that one reasonably skilled in the art, reading the Provisional
    Application that explicitly calls for “single-click” user entry, would have
    known that patentee had possession of a broader “single action of a user
    input device.”
    This jury instruction comports with this court’s law on written description. Moreover this
    instruction gave the jury adequate information to make a decision based on the
    possession standard of this court. This court finds that the jury instruction was not
    legally erroneous.
    eSpeed argues as well that the testimony of TT’s expert, Larry Nixon, was
    improper. This court reviews a district court’s decision to admit expert testimony under
    regional circuit law. Micro Chem., Inc. v. Lextron, Inc., 
    317 F.3d 1387
    , 1391 (Fed. Cir.
    2003). The Seventh Circuit reviews such evidentiary rulings for abuse of discretion.
    Liquid Dynamics Corp. v. Vaughan Co., Inc., 
    449 F.3d 1209
    , 1218 (Fed. Cir. 2006).
    Larry Nixon testified generally about the written description requirement and did not
    offer legal conclusions as to the adequacy of the provisional application’s disclosure.
    While offering general opinions on patent practices, he did not usurp the district court’s
    role of instructing the jury on the law. Therefore, the district court did not abuse its
    discretion by permitting his testimony.
    Finally, eSpeed contests the district court’s denial of its Rule 50(b) motion for
    JMOL.     This court reverses a denial of a JMOL motion “only if the jury’s factual
    determinations are not supported by substantial evidence or the legal conclusions
    2008-1392, -1393, -1422                     30
    implied from the verdict cannot be supported in law by those findings.”            Tronzo v.
    Biomet, Inc., 
    156 F.3d 1154
    , 1157 (Fed. Cir. 1998).
    eSpeed did not submit its Rule 50(a) JMOL motion at the close of evidence. This
    case, however, is not an instance where the district court entertained a Rule 50(b)
    JMOL motion that was not preserved before the jury verdict. Instead, the district court
    explicitly permitted each party to preserve JMOL motions by offering “placeholders” with
    “the details to be filled in later.” Albeit in abbreviated form, the district court found that
    eSpeed had presented and preserved its Rule 50(a) JMOL motion. This court is “not
    disposed to override” a district court’s determination of non-waiver. Gaus v. Conair
    Corp., 
    363 F.3d 1284
    , 1287 (Fed. Cir. 2004).
    Turning to the merits, the record shows substantial evidence to support the jury’s
    verdict that the provisional application’s written description was adequate. TT’s expert,
    Craig Pirrong explained that the provisional application distinguished between order
    entries performed in a single action and multiple-step actions. He did not distinguish a
    single-click from other types of single actions. Therefore, one of ordinary skill in the art
    could read the provisional application to encompass any single actions.
    Moreover, the parties’ experts did not dispute that one of ordinary skill in the art
    would have known about other forms of “single action” such as a double-click or
    pressing a key.     Considering the undisputed knowledge of those skilled in the art,
    disclosure of a species in this case provides sufficient written description support for a
    later filed claim directed to a very similar and understandable genus. Accordingly, the
    patents-in-suit are entitled to claim priority to the provisional application.
    2008-1392, -1393, -1422                       31
    VIII.
    eSpeed also appeals the district court’s grant of motion in limine precluding it
    from alleging the on-sale bar defense. The facts relevant to the on-sale bar defense are
    fairly simple. In September 1998, Harris Brumfield, one of the inventors of the patents-
    in-suit and an avid trader on electronic exchanges, conceived an idea that formed the
    basis of the invention. Brumfield hired TT to build trading software based on his idea.
    On September 29, 1998, TT and Brumfield entered into Individual Consulting
    Agreement #2 (“ICA2”), which provided that “TT will build a new trading window
    according to specifications provided to TT by Harris Brumfield.” In mid-February 1999,
    TT delivered a “market depth trader workstation” to Brumfield. On March 2, 1999,
    Brumfield agreed to pay TT for the custom software.
    An on-sale bar under 
    35 U.S.C. § 102
    (b) applies when the invention was both the
    subject of a commercial sale and ready for patenting before the critical date. Pfaff v.
    Wells Elecs., Inc., 
    525 U.S. 55
    , 67 (1998). The transaction at issue must be a “sale” in
    a commercial law sense. Allen Eng’g Corp. v. Bartell Indus., Inc., 
    299 F.3d 1336
    , 1352
    (Fed. Cir. 2002). “[A] sale is a contract between parties to give and to pass rights of
    property for consideration which the buyer pays or promises to pay the seller for the
    thing bought or sold.” In re Caveney, 
    761 F.2d 671
    , 676 (Fed. Cir. 1985). The invention
    is ready for patenting, inter alia, if there is “proof of reduction to practice before the
    critical date.” Plumtree Software, Inc. v. Datamize, LLC, 
    473 F.3d 1152
    , 1161 (Fed. Cir.
    2006). The district court granted TT’s motion in limine to preclude eSpeed from arguing
    a prior sale of the invention. TT characterizes this as a de facto summary judgment
    dismissing eSpeed’s on-sale bar defense under 
    35 U.S.C. § 102
    (b).
    2008-1392, -1393, -1422                    32
    This court affirms the district court’s de facto summary judgment that ICA2 was
    not a sales transaction for a product embodying the patented invention. Under ICA2,
    TT promised to develop trading software for Brumfield because he lacked the technical
    expertise to do so. ICA2 was a contract for providing hourly programming services to
    Brumfield—not a computer software license. Brumfield did not sell or offer for sale
    anything embodying the invention. Therefore, the trial court properly determined that
    the invention had not been offered for a commercial sale.
    eSpeed’s reliance on Brasseler, U.S.A. I, L.P. v. Stryker Sales Corp., 
    182 F.3d 888
     (Fed. Cir. 1999), to characterize ICA2 as a commercial software license is
    misplaced. In Brasseler, the buyer and the seller of the contract each employed some
    inventors of the patented invention. 
    Id. at 890
    . This court found a commercial sale
    because the seller manufactured over 3,000 products embodying the invention and sold
    it solely to the buyer. 
    Id. at 890
    . Thus, the transaction in this 1999 Federal Circuit case
    is far more than occurred here. No product was ever sold to Brumfield. Also, this court
    in Brasseler in dicta suggested that the outcome would be different in “a case in which
    an individual inventor takes a design to a fabricator and pays the fabricator for its
    services in fabricating a few sample products.”      
    Id. at 891
    .   Inventors can request
    another entity’s services in developing products embodying the invention without
    triggering the on-sale bar. Brumfield’s request to TT to make software for his own
    secret, personal use could not constitute a sale under 
    35 U.S.C. § 102
    (b).
    IX.
    A patent may be rendered unenforceable for inequitable conduct if an applicant,
    with intent to mislead or deceive the examiner, fails to disclose material information or
    2008-1392, -1393, -1422                     33
    submits materially false information to the PTO during prosecution. Digital Control Inc.
    v. Charles Mach. Works, 
    437 F.3d 1309
    , 1313 (Fed. Cir. 2006) (citation omitted).
    Where a judgment regarding inequitable conduct follows a bench trial, as it did here,
    this court reviews the district court’s findings of materiality and intent for clear error and
    its ultimate conclusion for an abuse of discretion. ACCO Brands, Inc. v. ABA Locks
    Mfg. Co., 
    501 F.3d 1307
    , 1314 (Fed. Cir. 2007). The district court held that TT did not
    engage in inequitable conduct by not disclosing Brumfield’s custom software to the PTO
    because the software was not material to the question of patentability.           This court
    agrees.
    The first issue this court addresses is whether the use of Brumfield’s software
    between March 2 and June 9, 1999 was material. The district court found that TT relied
    on the March 2, 1999 priority date in good faith, and that TT did not need to disclose
    Brumfield’s use of software past this priority date. The record also suggests that the
    examiner never questioned the March 2, 1999 priority date. In submitting a brochure for
    MD_Trader, one of TT’s commercial embodiments of the patents-in-suit, TT stated to
    the examiner that the brochure was disclosed to the public no earlier than March 2,
    1999.     This disclosure would have triggered a request for further information if the
    examiner had detected a priority date issue. Instead, the examiner did not perceive any
    issue and allowed the claims.       The district court did not clearly err by finding that
    Brumfield’s software was immaterial given that his use of the software after the priority
    date would not have changed the examiner’s analysis of the patent. See Reactive
    Metals & Alloys Corp. v. Esm, Inc., 
    769 F.2d 1578
    , 1583 (Fed. Cir. 1985) (“[T]here is no
    point in bringing sales activities to the examiner's attention which, for example, did not
    2008-1392, -1393, -1422                      34
    occur before the one-year grace period simply to have the examiner ‘decide’ that the
    sales were not early enough to trigger the time bar.”)
    The second issue is whether TT should have disclosed any pre-March 2, 1999
    activities to the PTO. eSpeed argues that TT should have disclosed TT’s “sale” of the
    custom software to Brumfield.       However, as discussed above, ICA2 was not a
    commercial transaction; a reasonable examiner would not have regarded ICA2 as
    material to the issue of patentability. eSpeed also argues that TT should have disclosed
    Brumfield’s testing of the custom software before March 2, 1999. Experimental uses of
    the patented invention may in some instances give rise to an issue of patentability. See
    Manville Sales Corp. v. Paramount Sys, Inc., 
    917 F.2d 544
    , 552 (Fed. Cir. 1990). In this
    case, however, the record shows that Brumfield tested the software for his own
    confidential, personal purposes. See Elizabeth v. Am. Nicholson Pavement Co., 
    97 U.S. 126
    , 134-35 (1878).      The district court did not clearly err by finding that a
    reasonable examiner similarly would not have regarded such experimental use as
    material. Brumfield kept the software secret until TT and Brumfield decided to file a
    provisional application. Accordingly, the district court did not abuse its discretion in
    finding that the TT did not engage in inequitable conduct.
    X.
    For the above-stated reasons, this court affirms on all issues presented on
    appeal.
    AFFIRMED.
    LOURIE, CIRCUIT JUDGE, concurs in the result.
    2008-1392, -1393, -1422                     35
    United States Court of Appeals for the Federal Circuit
    2008-1392, -1393, -1422
    TRADING TECHNOLOGIES INTERNATIONAL, INC.,
    Plaintiff-Appellant,
    v.
    ESPEED, INC.,
    ECCO LLC, ECCOWARE LTD., and ESPEED INTERNATIONAL, LTD.,
    Defendants-Cross Appellants.
    Appeals from the United States District Court for the Northern District of Illinois
    in Case No. 04-CV-5312, Senior Judge James B. Moran.
    CLARK, District Judge, concurring.
    Believing that the judgment is correct and that the opinion correctly analyzes the
    issues in this case in light of current law, I concur. I write separately to respectfully
    suggest that the current de novo standard of review for claim construction may result in
    the unintended consequences of discouraging settlement, encouraging appeals, and, in
    some cases, multiplying the proceedings.
    Determination of the meaning that would have been attributed to a claim term by
    one of ordinary skill in a sophisticated field of art on the date of filing often requires
    examination of extrinsic evidence—a determination of crucial facts underlying the
    dispute, as outlined by Judge Rader in the majority opinion. On some occasions, a
    determination will be made based, in part, on the weight to be given to conflicting
    extrinsic evidence or even to an evaluation of an expert’s credibility.
    The standard of review that will be applied by a higher court sets one of the
    important benchmarks against which competent counsel evaluates decisions regarding
    settlement and appeal. The importance is highlighted by the fact that every brief must
    state the standard of review. See Fed. R. App. P. 28(a)(9)(B), (b)(5); Fed. Cir. R.
    28(a)(10),(b).
    The de novo review standard has at least two practical results, neither of which
    furthers the goal of the “just, speedy, and inexpensive determination of every action and
    proceeding.” Fed. R. Civ. P. 1. First, rejection of settlement is encouraged, and a
    decision to appeal is almost compelled, where counsel believes the client’s position is
    valid, even if debatable, depending on the view taken of extrinsic evidence. It is a
    natural reaction upon receiving an unfavorable claim construction from a trial court to
    conclude that one’s own view of complicated facts will be better understood by the
    judges of the Federal Circuit, who generally have more experience with patent cases,
    and who, by their own authoritative rule, review the claim construction without regard to
    any determination the lower court has made.
    A patentee has the opportunity to write clearly enough so that the meaning of
    the claims can be determined from the specification. What public policy is advanced by
    a rule requiring the determination of underlying facts by more than one court, especially
    when the likely result is that another group of citizens will be required to “volunteer” for
    lengthy jury duty on remand?
    A second, although less common, consequence of the de novo review standard
    is the opportunity it offers to the party that presents a case with an eye toward appeal
    rather than the verdict. Skilled counsel who believes a client may not be well received
    by a jury is tempted to build error into the record by asking for construction of additional
    terms, and/or presenting only a skeleton argument at the claim construction stage.
    2008-1392, -1393, -1422
    2
    This is risky, but it would be unusual for this Court to consider a point waived if a
    particular claim construction had been requested of the trial court and some argument
    made, but the clearest explanation was presented on appeal. An appellate court
    normally does not consider an unpreserved point of error, but a more sharply focused
    argument regarding points presented on appeal, from among those that are technically
    preserved, is actually the goal of the appellate specialist. This tactic would be less
    inviting if claim construction was officially accorded some measure of deference, even if
    it was applied only in those cases in which resort to extrinsic evidence was necessary.
    2008-1392, -1393, -1422
    3