Republic of Ecuador v. for the Issuance of a Subpoena Under 28 U.S.C. § 1782(A) , 735 F.3d 1179 ( 2013 )


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  •                                                                    FILED
    United States Court of Appeals
    Tenth Circuit
    November 13, 2013
    PUBLISH              Elisabeth A. Shumaker
    Clerk of Court
    UNITED STATES COURT OF APPEALS
    TENTH CIRCUIT
    IN RE: APPLICATION OF THE
    REPUBLIC OF ECUADOR; DIEGO
    GARCIA CARRION, the Attorney
    General of the Republic of Ecuador,                 No. 12-1402
    Petitioners - Appellees,
    v.
    For the Issuance of a Subpoena Under
    28 U.S.C. § 1782(a) for the Taking of
    a Deposition of and the Production of
    Documents by BJORN BJORKMAN
    for use in a foreign proceeding,
    Respondent - Appellant.
    -----------------------
    CHEVRON CORPORATION,
    Intervenor - Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF COLORADO
    (D.C. No. 11-CV–01470-WYD-MEH)
    Theodore J. Boutrous Jr. of Gibson, Dunn & Crutcher, L.L.P., Los Angeles,
    California, (Ethan D. Dettmer of Gibson, Dunn & Crutcher, L.L.P, San Francisco,
    California and Robert C. Blume of Gibson, Dunn & Crutcher, L.L.P., Denver,
    Colorado, with him on the briefs), for Respondent - Appellant and Intervenor
    Appellant.
    Gene C. Schaerr (and Eric W. Bloom of Winston & Strawn, L.L.P., on the brief),
    Washington, D.C., for Petitioners - Appellees.
    Before KELLY, McKAY, and MATHESON, Circuit Judges.
    KELLY, Circuit Judge.
    Intervenor-Appellant Chevron Corporation appeals from a district court
    order granting a motion to compel production of documents pursuant to subpoenas
    issued under 28 U.S.C. § 1782. Section 1782 allows for discovery of documents
    to be used in a foreign proceeding. Petitioners-Appellees, the Republic of
    Ecuador and its Attorney General, Dr. Diego García Carrión (collectively, “the
    Republic”) sought the discovery to defend an $18.2 billion judgment against
    Chevron by an Ecuadorian court. Chevron is seeking relief from that judgment
    pursuant to investment treaty arbitration under United Nations’ rules. Our
    jurisdiction arises under 28 U.S.C. § 1291, and we affirm the district court’s
    order.
    Background
    Since the early 1990s, Chevron and its predecessor company, Texaco, Inc., 1
    1
    Chevron merged with Texaco in 2001 and assumed liability for its
    operations. Republic of Ecuador v. Chevron Corp., 
    638 F.3d 384
    , 388 n.1, 389
    n.3 (2d Cir. 2011).
    -2-
    have defended litigation concerning Texaco’s operation in Ecuador and the
    environmental contamination it allegedly produced. This litigation started in the
    Southern District of New York but eventually found its way to the courts of Lago
    Agrio, Ecuador. (For a detailed description of the New York litigation, see
    Aguinda v. Texaco, Inc., 
    303 F.3d 470
    (2d Cir. 2002)). In February 2011, the
    court in Lago Agrio entered an $18.2 billion judgment against Chevron, currently
    on appeal.
    Prior to the Lago Agrio judgment, in September 2009, Chevron commenced
    arbitration proceedings against the Republic under the U.S.–Ecuador Bilateral
    Investment Treaty, pursuant to the rules of the United Nations Commission on
    International Trade Law. Chevron invoked this procedure to stop the alleged
    “due process, fair treatment, and international-law rights” violations it allegedly
    suffered at the hands of Ecuadorian courts. Aplt. Br. 12. In February 2011,
    immediately following the Lago Agrio judgment, the arbitral tribunal ordered that
    the Republic stay all efforts to enforce the Lago Agrio judgment, pending further
    order of the tribunal.
    This is where the underlying litigation currently stands. However, gearing
    up for arbitration, both sides have filed numerous 28 U.S.C. § 1782 applications
    in district courts throughout the United States seeking discovery of evidence for
    use in a foreign proceeding. In June 2011, the Republic filed a § 1782 application
    in the District of Colorado seeking “discovery from Bjorn Bjorkman to aid the
    -3-
    Republic in defending the validity of the Lago Agrio judgment.” I Jt. App. 42.
    The Republic alleged that Mr. Bjorkman served as one of Chevron’s chief experts
    and that the Ecuadorian court explicitly relied on his opinions. 
    Id. at 42-43.
    Mr.
    Bjorkman and Chevron, as an interested party, responded challenging discovery,
    and the district court referred the Republic’s application to a magistrate judge.
    During the Lago Agrio trial, Chevron retained Mr. Bjorkman, “an ecologist
    specializing in ecological and human health risk assessments, site investigations,
    and biological and biodiversity investigations.” Aplt. Br. 15. In this capacity,
    Mr. Bjorkman prepared and received documents and communications “created in
    anticipation of litigation with the intent that they would be kept confidential.” 
    Id. at 15-16.
    These documents and communications came from a variety of sources
    in Chevron’s litigation team, including “lawyers, in-house scientists, consultants,
    and expert witnesses.” 
    Id. at 17.
    In the instant action, Chevron argued before the
    magistrate judge that the 2010 revisions to Fed. R. Civ. P. 26 brought materials
    prepared by or provided to Mr. Bjorkman under the protection of the work-
    product doctrine.
    In August 2011, the magistrate judge granted the Republic’s application,
    rejecting Chevron’s argument and noting that Rule 26 “does not preclude the
    disclosure of information constituting the basis for a report, even though prepared
    for use in trial.” I Jt. App. 21. The district court adopted and affirmed the
    magistrate’s order. Pursuant to this order, Chevron produced “all of the facts and
    -4-
    data [Mr. Bjorkman] considered in forming his expert opinions.” Aplt. Br. 2.
    However, Chevron withheld thousands of documents that it believed fell under
    Rule 26’s work-product doctrine. Claiming this violated the discovery order, the
    Republic filed a motion to compel further production. In January 2012, the
    magistrate judge partially granted the Republic’s motion. Relevant to this appeal,
    the magistrate judge held that:
    (1) Chevron may properly withhold drafts of Mr.
    Bjorkman’s expert reports and disclosures, in whatever
    form, under Rule 26(b)(4)(B);
    (2) Chevron may properly withhold documents containing
    communications between Mr. Bjorkman and Chevron’s
    attorneys under Rule 26(b)(4)(C); however, Chevron may
    not withhold communications between Mr. Bjorkman and
    non-attorneys; and
    (3) Rule 26(b)(3) did not provide work-product protection
    to all documents in the hands of a reporting expert, only
    those documents specifically covered by Rules 26(b)(4)(B)
    and (C) were so protected.
    Republic of Ecuador v. Bjorkman, No. 11-cv-01470, 
    2012 WL 12755
    , at *4–6 (D.
    Colo. Jan. 4, 2012); I Jt. App. 28-31. Specifically, the magistrate judge held that
    the intention of Rule 26 is to “protect the mental impressions and legal theories of
    a party’s attorney, not its expert.” 
    Id. at *6.
    With that premise, the magistrate
    judge concluded that Chevron “may not withhold any documents or information
    based upon the ‘work product doctrine’ set forth in Rule 26(b)(3), except those
    specifically protected by Rules 26(b)(4)(B) and (C).” 
    Id. On October
    4, 2012,
    -5-
    the district court affirmed and adopted the magistrate judge’s recommendation in
    full. I Jt. App. 35. Mr. Bjorkman and Chevron timely appealed the district
    court’s October 4, 2012 order to this court.
    Thereafter, Chevron sought to stay discovery pending review by this court.
    The district court denied this request and ordered Chevron to produce all
    documents subject to the October 4, 2012 order not yet produced. On the parties’
    motion, the magistrate judge entered a stipulated protective order, limiting the
    Republic’s use of materials received from Mr. Bjorkman to “conducting the
    Bilateral Investment Treaty Arbitration.” I Jt. App. 36. While this appeal was
    pending, the Republic filed a second motion to compel, alleging that Chevron
    continued to improperly withhold documents that fell under the October 4, 2012
    order. The magistrate judge issued two more orders, in January and April 2013,
    clarifying the scope of the October 4, 2012 order and compelling further
    production. See Republic of Ecuador v. Bjorkman, No. 11-cv-01470, 
    2013 WL 50430
    (D. Colo. Jan. 3, 2013). Chevron never objected to the January and April
    2013 orders under Fed. R. Civ. P. 72, and the district court never adopted them.
    Discussion
    I.    Jurisdiction
    Although the parties did not challenge this court’s jurisdiction, we raised
    -6-
    the issue sua sponte and have the benefit of supplemental briefing. See Smith v.
    Rail Link, Inc., 
    697 F.3d 1304
    , 1312-13 (10th Cir. 2012). Absent certain
    exceptions, “federal appellate courts have jurisdiction solely over appeals from
    final decisions of the district courts of the United States.” Rekstad v. First Bank
    System, Inc., 
    238 F.3d 1259
    , 1261 (10th Cir. 2001) (internal quotation ommitted).
    A decision is final if it “ends the litigation on the merits and leaves nothing for
    the court to do but execute the judgment.” W. Energy 
    Alliance, 709 F.3d at 1047
    (quoting Coopers & Lybrand v. Livesay, 
    437 U.S. 463
    , 467 (1978)). While the
    district court’s October 4, 2012 order compelling the discovery at issue appears
    on its face “final,” the magistrate judge’s January and April 2013 orders
    compelling further discovery call its finality into question.
    Initially we note that in a § 1782 proceeding, there is nothing to be done
    “on the merits.” Section 1782 empowers a district court to order a person
    residing within its district to “give his testimony or statement or to produce a
    document or other thing for use in a proceeding in a foreign or international
    tribunal.” 28 U.S.C. § 1782. The only issue before the district court is discovery;
    the underlying litigation rests before a foreign tribunal. See Bayer AG v.
    Betachem, Inc., 
    173 F.3d 188
    , 189 n.1 (3d Cir. 1999).
    In Phillips v. Beierwaltes, this court stated without qualification that § 1782
    “orders are considered final and appealable to this court.” 
    466 F.3d 1217
    , 1220
    (10th Cir. 2006). However, we were not faced with the circumstances we face
    -7-
    here—a § 1782 order by a district court followed by additional orders by a
    magistrate judge concerning the same § 1782 application.
    The Republic argues that a § 1782 order is not a “final decision” so long as
    “further proceedings [are] still underway in the district court.” Aplee. Supp. Br.
    7. However, the cases it cites do not hold that a district court’s § 1782 order
    cannot be “final” if subject to ongoing dispute about its coverage and scope
    before a magistrate judge. The Ninth Circuit, in In re Premises Located at 840
    140th Ave. NE, noted that a § 1782 order is final “[o]nce the district court has
    ruled on the parties’ motions concerning the evidentiary 
    requests.” 634 F.3d at 566
    . Here, once the district court affirmatively decided the proper scope of
    discovery under the Republic’s application, it disposed of all “evidentiary
    requests.” 2 Moreover, the Seventh Circuit stated in Heraeus Kulzer, GmbH v.
    Biomet, Inc., that, in the context of a § 1782 application, “when no further
    proceedings are contemplated, the court’s last order, even if it is a discovery
    order, is an appealable final order.” 
    633 F.3d 591
    , 593 (7th Cir. 2011). In this
    case, the district court’s “last order” was its October 4, 2012 order. The district
    court never adopted the magistrate judge’s January and April 2013 orders as its
    2
    The district court decided the proper scope of discovery in its October 4,
    2012 order by adopting the magistrate judge’s January 2012 recommendation that
    only documents protected by Rules 26(b)(4)(B) and (C) were privileged. The
    magistrate judge’s January and April 2013 orders merely clarified the scope of the
    district court’s order and ordered Chevron to produce additional documents
    thereunder. Supp. App. 20. This appeal hinges on the discovery addressed in the
    October 4, 2012 order.
    -8-
    own; consequently, neither of those orders are “final decisions of the district
    court[],” appealable to this court. 28 U.S.C. § 1291; see 
    Phillips, 466 F.3d at 1222
    (holding that a magistrate judge’s § 1782 discover order is not appealable
    unless and until the district court adopts it). The district court’s October 4, 2012
    order is thus the last definitive word and a “final decision” under 28 U.S.C. §
    1291. We proceed to the merits.
    II.      Rule 26
    We review de novo the district court’s interpretation of the Federal Rules
    of Civil Procedure. Esposito v. United States, 
    368 F.3d 1271
    , 1275 (10th Cir.
    2004).
    Chevron argues that the 2010 revisions to the Federal Rules caused a sea
    change in the discoverability of documents held by experts. It argues that the
    Rule 26(b)(3)(A)’s “by or for another party or its representative” language
    protects trial preparation materials prepared by or provided to a testifying expert.
    Aplt. Br. 25. Further, it argues that the amendment to Rule 26(a)(2)(B)(ii)’s
    reporting standard was intended to make clear that reporting experts are protected
    by the work-product doctrine. Aplt. Br. at 26-29. Finally, it argues that the two
    limited protections of Rules 26(b)(4)(B) and (C) are not the exclusive protections
    for expert materials but merely “examples of the broader protection provided by
    Rule 26(b)(3)(A).” Aplt. Br. at 21. We disagree that the 2010 amendments
    produced such changes.
    -9-
    As with any exercise in statutory or rule interpretation, we start with the
    plain language of the text itself. United States v. Ceballos-Martinez, 
    371 F.3d 713
    , 716 (10th Cir. 2004). Plain language does not require us, however, to “wear
    blinders to the context in which a word or phrase or sentence is used.” 
    Id. Rather, we
    must interpret a “choice of words in the context that [Congress] chose
    to use.” 
    Id. Because Chevron
    relies on the change from one set of Rules to the
    next, we look to the Advisory Committee’s comments to place the 2010 revisions
    in context. See 
    Esposito, 368 F.3d at 1275
    (noting that the Advisory Committee’s
    comments are entitled to weight in determining congressional purpose).
    We look first to the Rules themselves. Rule 26(b)(3)(A) addresses the
    work-product doctrine:
    (A) Documents and Tangible Things. Ordinarily, a party
    may not discover documents and tangible things that are
    prepared in anticipation of litigation or for trial by or for
    another party or its representative (including the other
    party’s attorney, consultant, surety, indemnitor, insurer, or
    agent).
    Fed. R. Civ. P. 26(b)(3)(A). Whether this extends to a party’s expert is the
    central issue of this appeal. However, other portions of Rule 26 make clear that
    some forms of expert materials are not immune to discovery. Rule 26(a), which
    provides for mandatory disclosures, requires a party to disclose the identity of any
    expert it intends to call at trial and to also provide:
    (B) . . . a written report . . . [that] must contain: . . . (ii) the
    facts or data considered by the witness in forming [its
    - 10 -
    opinion] . . . .
    Fed. R. Civ. P. 26(a)(2)(B)(ii).
    Finally, Rule 26(b)(4) makes clear that some forms of expert materials are
    exempt from Rule 26(a)(2)’s mandatory disclosures:
    (B) Trial-Preparation Protection for Draft Reports or
    Disclosures. Rules 26(b)(3)(A) and (B) protect drafts of
    any report or disclosure required under Rule 26(a)(2) . . . .
    (C) Trial-Preparation Protection for Communications
    Between a Party’s Attorney and Expert Witness. Rules
    26(b)(3)(A) and (B) protect communications between the
    party’s attorney and any witness required to provide a
    report under Rule 26(a)(2)(B) . . . .
    Fed. R. Civ. P. 26(b)(4)(B) & (C). Rule 26(b)(4)(C) goes on to list three narrow
    exceptions to its coverage. Fed. R. Civ. P. 26(b)(4)(C)(i)–(iii).
    A.    Rule 26(b)(3)(A)
    Chevron argues that the “by or for another party or its representative”
    language of Rule 26(b)(3)(A) clearly includes materials prepared by or for an
    expert witness in anticipation of litigation. Aplt. Br. 26. It argues that even
    before 2010, there existed a “work product protection for expert witness
    materials.” 
    Id. We fail
    to see how the Rules or interpreting cases demonstrate
    that expert materials are protected under Rule 26(b)(3)’s work-product doctrine.
    First, the plain language of Rule 26(b)(3) does not clearly mandate the
    result Chevron seeks. The phrase, “party or its representatives,” implies agency,
    and each of the six listed examples connotes someone acting in either an agency
    - 11 -
    or fiduciary capacity for the “party or its representative.” Clearly, agents of a
    party or its representative, who stand in the legal shoes of the party, are entitled
    to the same work-product protections as the party itself. See United States v.
    Nobles, 
    422 U.S. 225
    , 238-39 (1975) (“It is therefore necessary that the [work-
    product] doctrine protect material prepared by agents for the attorney as well as
    those prepared by the attorney himself.”). No showing has been made that an
    expert would have capacity to act on behalf of a party in this case.
    Second, the traditional understanding of the work-product doctrine militates
    against concluding that expert materials are protected under Rule 26(b)(3). The
    Supreme Court has stated that, “[a]t its core, the work-product doctrine shelters
    the mental processes of the attorney, providing a privileged area within which he
    can analyze and prepare his client’s case.” 
    Nobles, 422 U.S. at 238
    . We have
    said the same: “the work product doctrine is intended only to guard against
    divulging the attorney’s strategies or legal impressions.” Resolution Trust Corp.
    v. Dabney, 
    73 F.3d 262
    , 266 (10th Cir. 1995). This understanding of the work-
    product doctrine was “substantially incorporated in Federal Rule of Civil
    Procedure 26(b)(3).” Upjohn Co. v. United States, 
    449 U.S. 383
    , 398 (1981).
    Ever since the Supreme Court first articulated the work-product doctrine in
    Hickman v. Taylor, the scope of discovery under Rule 26 has been understood to
    preclude “inquiries into the files and the mental impressions of an attorney.” 
    329 U.S. 495
    , 510 (1947).
    - 12 -
    Despite this focus on an attorney’s mental impressions, courts applying the
    Hickman doctrine struggled with whether the mental impressions of non-attorneys
    were also protected, particularly when litigants relied extensively on expert
    opinions. See Fed. R. Civ. P. 26(b)(4) (1970 Comments). Many federal courts
    held that materials produced by experts were protected under the work-product
    doctrine. See, e.g., Carpenter-Trant Drilling Co. v. Magnolia Petroleum Corp., 
    23 F.R.D. 257
    , 262 (D. Neb. 1959); United States v. Certain Parcles of Land, 
    25 F.R.D. 192
    , 193 (N.D. Cal. 1959); United Air Lines, Inc. v. United States, 
    26 F.R.D. 213
    , 218 (D. Del. 1960); cf. United States v. McKay, 
    372 F.2d 174
    , 177
    (5th Cir. 1967) (reversing the district court’s holding that an appraisal report was
    protected as “the work product of the expert witness”).
    In 1970, the Advisory Committee expressly rejected the holdings of these
    cases. The 1970 revised Rules were the first to incorporate a version of the
    Hickman work-product doctrine. The drafters noted that leaving the application
    of the doctrine to caselaw had grown troublesome given the “confusion and
    disagreement as to the scope of the Hickman work-product doctrine, particularly
    whether it extends beyond work actually performed by lawyers.” Fed. R. Civ. P.
    26(b)(3) (1970 Comments). By providing a rules-based work-product doctrine,
    the Advisory Committee expressly “reject[ed] as ill-considered the decisions
    which have sought to bring expert information within the work-product doctrine.”
    Fed. R. Civ. P. 26(b)(4) (1970 Comments).
    - 13 -
    The 1970 revisers made clear that Rule 26(b)(3)’s work-product doctrine
    extends past attorneys to “a party or any representative acting on his behalf.”
    Fed. R. Civ. P. 26(b)(3). (1970 Comments). At the same time, however, they
    made plainly clear that this protection did not “bring expert information within
    the work-product doctrine.” Fed. R. Civ. P. 26(b)(4) (1970 Comments). Chevron
    does not point to contrary authority that refutes this original understanding of
    Rule 26(b)(3).
    B.    Rules 26(a)(2)(B), 26(b)(4)(B) & (C)
    Chevron next argues that the 2010 revisions to Rules 26(a)(2) and (b)(4)
    restored broad work-product protection to expert materials. First, we address the
    changes to Rule 26(a)(2). In 1993, Rules 26(a)(1)–(4) were added, placing on
    each party the burden of producing “required disclosures” before being served
    with formal discovery. Among these disclosures is the requirement that any
    person retained or specially employed to provide expert testimony prepare a
    written report detailing that testimony. Fed. R. Civ. P. 26(a)(2)(B). As codified
    in 1993, Rule 26(a)(2) required that an expert’s report contain “the data or other
    information considered by the witness in forming” his or her opinion. Fed. R.
    Civ. P. 26(a)(2)(B)(ii) (1993 revised version). The drafters made the purpose of
    this broadly formulated “other information” standard clear:
    Given this obligation of disclosure, litigants should no
    longer be able to argue that materials furnished to their
    experts to be used in forming their opinions—whether or
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    not relied upon by the expert—are privileged or otherwise
    protected from disclosure when such persons are testifying
    or being deposed.
    Fed. R. Civ. P. 26(a)(2) (1993 Comments).
    While the 1993 amendments eliminated perceived restrictions in expert
    discovery, by 2010, the Advisory Committee believed that some courts had taken
    Rule 26(a)(2)(B)(ii) too far, resulting in “undesirable effects.” Fed. R. Civ. P. 26
    (2010 Comments). Some courts held that drafts of expert reports were
    discoverable under Rule 26(a)(2)(B)(ii). See, e.g., Elm Grove Coal Co. v.
    Director, O.W.C.P., 
    480 F.3d 278
    , 303 (4th Cir. 2007); Occulto v. Adamar of
    N.J., Inc., 
    125 F.R.D. 611
    , 612 (D.N.J. 1989). Other courts held that
    communications between an expert and a party’s attorney—even communications
    containing the attorney’s mental impression—were discoverable under Rule
    26(a)(2)(B)(ii). See, e.g., Elm Grove Coal 
    Co., 480 F.3d at 303
    ; In re Pioneer Hi-
    Bred Intern., Inc., 
    238 F.3d 1370
    , 1375 (Fed. Cir. 2001); Intermedics, Inc. v.
    Ventritex, Inc., 
    139 F.R.D. 384
    , 387 (N.D. Cal. 1991). These decisions,
    according to the Advisory Committee, had the effect of raising the cost of
    litigation and causing attorneys to be overly cautious in their interaction with
    experts. Fed. R. Civ. P. 26 (2010 Comments).
    Thus, in 2010 the Advisory Committee abandoned the “facts or other
    information” standard for expert reporting and adopted the “facts or data”
    standard found in the current version of the Rules. Fed. R. Civ. P. 26(a)(2)(B)(ii)
    - 15 -
    (2010 revised version). Through this change, the Advisory Committee “intended
    to alter the outcome in cases that have relied on the 1993 formulation in requiring
    disclosure of all attorney–expert communications and draft reports.” Fed. R. Civ.
    P. 26(a)(2)(B) (2010 Comments). In conjunction, the drafters amended Rule
    26(b)(4) to “make this change explicit.” 
    Id. They provided
    two exemptions to
    disclosure: “Trial-Preparation Protection for Draft Reports or Disclosures” (Rule
    26(b)(4)(B)); and “Trial-Preparation Protection for Communications Between a
    Party’s Attorney and Expert Witness” (Rule 26(b)(4)(C)).
    Contrary to Chevron’s assertion that these revisions were intended to have
    wide-ranging effects, the revisions appear to alter only the outcome of cases
    either allowing discovery of draft reports or attorney–expert communications.
    Fed. R. Civ. P. 26 (2010 Comments). Chevron cannot point to any cases allowing
    discovery of the type sought here that Rule 26(b)(4) silently overturned. Rather,
    Chevron’s contention that Rules 26(b)(4)(B) and (C) are merely “examples” is
    irreconcilable with the above stated intentions. Had the drafters believed that
    expert materials were protected more broadly under Rule 26(b)(3) (something
    they believed “ill-considered” in 1970), then they could have chosen to bolster the
    protections afforded under that subdivision rather than providing two explicit
    protections in subdivision (b)(4). Cf., Joseph v. Wiles, 
    223 F.3d 1155
    , 1161 (10th
    Cir. 2006) (“[W]here Congress includes particular language in one section of a
    statute but omits it in another section of the same Act, it is generally presumed
    - 16 -
    that Congress acts intentionally and purposely in the disparate inclusion or
    exclusion.”) (internal quotations omitted).
    Other comments make clear that the protections of Rules 26(b)(4)(B) and
    (C) are the exclusive protections afforded to expert trial-preparation materials.
    “Rules 26(b)(4)(B) and (C) do not impede discovery about the opinions to be
    offered by the expert or the development, foundation, or basis of those opinions.”
    Fed. R. Civ. P. 26(b)(4) (2010 Comments). If Rules 26(b)(4)(B) and (C) were not
    exclusive, then such a statement would be unlikely.
    Thus, the underlying purpose of the 2010 revision was to return the work-
    product doctrine to its traditional understanding. The drafters articulated: “The
    refocus of disclosure on ‘facts and data’ is meant to limit disclosure to material of
    a factual nature by excluding theories or mental impressions of counsel.” Fed. R.
    Civ. P. 26(a)(2)(B) (2010 Comments). Thus, Rule 26(b)(4), especially
    subdivision (C), restores the core understanding that the work-product doctrine
    solely protects the inner workings of an attorney’s mind. Though Chevron argues
    that “facts or data” is to be construed narrowly to limit discovery to the bare-
    bones factual information underlying an expert’s opinion, Aplt. Br. 29, the
    comments reinforce the strong preference for broad discovery of expert materials:
    “[T]he intention is that ‘facts or data’ be interpreted broadly to require disclosure
    of any material considered by the expert, from whatever source, that contains
    factual ingredients.” Fed. R. Civ. P. 26(a)(2)(B) (2010 Comments). This
    - 17 -
    indifference as to the source of material refutes Chevron’s contention that
    documents provided to an expert by a party are protected under Rule 26(b)(3).
    And materials containing “factual ingredients” include far more than materials
    made up solely of “facts or data.”
    AFFIRMED. 3 We GRANT the Republic’s motion to file a supplemental
    appendix.
    3
    Because we affirm on the merits, we have no need to reach the
    Republic’s contention that Chevron is judicially estopped from raising the
    arguments it advances here.
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