Litigation

Intellectual Ventures I LLC et al. v. Citigroup, Inc. et al.

1:14-cv-04638

Filed
2014-06-25

Patents at issue (5)

7634666
6715084
6314409
5745574
6826694

Summary

Listed in the Stanford NPE Litigation Database as a case involving the '666 patent, with Intellectual Ventures II LLC identified as the patent asserter. The outcome was not confirmed in the narrative.

Case overview & background

Plain-language overview of the case: parties, accused product, patents at issue, and why the suit matters.

I'll research this case thoroughly using web search to verify the details.

I'm finding key details. Let me dig deeper into the docket, the patents, and the outcome.

Let me examine the detailed lead trial counsel document and the specific docket events.

Case Overview — Intellectual Ventures I LLC et al. v. Citigroup, Inc. et al., No. 1:14-cv-04638 (AKH) (S.D.N.Y.)

Parties and the accused technology. The plaintiffs are Intellectual Ventures I LLC and Intellectual Ventures II LLC, the assertion vehicles of Bellevue, Washington–based Intellectual Ventures ("IV") — the world's largest patent-licensing/patent-assertion fund, founded in 2000 and reported to have raised roughly $6 billion from investors (Ars Technica, "For world's biggest troll, first patent case ends up in tatters," 2014). IV is a classic non-practicing entity: the Stanford NPE Litigation Database classifies this docket as an NPE case with "acquired patents," naming Intellectual Ventures II LLC as the patent asserter. The defendants — Citigroup, Inc., Citicorp, and Citibank, N.A. — are the operating bank holding company and its principal banking subsidiaries. The technology at issue is cyber-security and the protection of customer payment/banking information (JD Supra case note, Dec. 9, 2014). Based on the parallel IV v. JPMorgan Chase litigation that Judge Hellerstein handled simultaneously — and the same '666 patent's role there — the accused instrumentalities appear to be bank systems built around IBM "Crypto Card" cryptographic co-processors used in payment-data encryption, rather than consumer-facing apps; IV also litigated discovery over IBM source code in the Citigroup case (firm trial-counsel representations, kradamo.com PDF). I could not retrieve the Citigroup complaint itself to confirm the precise accused products, so that link is inferred rather than verified.

Patents asserted and technical sketches. The case metadata lists five asserted patents: U.S. 7,634,666 ("Crypto-engine for cryptographic processing of data") — a hardware co-processor that offloads encryption from a host processor, with claim 4 requiring a "multiplication unit, an addition unit and a sign inversion unit"; U.S. 6,715,084 ("Firewall system and method via feedback from broad-scope monitoring for intrusion detection") — network intrusion detection that analyzes traffic across multiple hosts/sites and adjusts firewalls/alerts affected devices; U.S. 6,314,409 ("System for controlling access and distribution of digital property") — DRM-style control over access to and redistribution of encrypted digital content via "rules defining access rights"; U.S. 5,745,574 ("Security infrastructure for electronic transactions"); and U.S. 6,826,694 ("High resolution access control") — selecting and implementing an access rule based on the contents of two or more received packets. Caveat on sourcing: secondary databases conflict on the exact asserted set for this docket. The Stanford entry for 1:14-cv-04638 also lists U.S. Patents 5,455,945, 6,189,271, 6,546,002, 6,819,271, and 7,984,081, and a contemporaneous JD Supra note described Citigroup's stay motion as covering the '666, '574, '271, '081, and '002 patents — i.e., a partly different and larger list. I could not fully reconcile these lists from the sources retrieved; the five patents above are those given in the authoritative case metadata, and IV's bank campaign plainly involved overlapping patent families asserted across the Citigroup, JPMorgan, and Capital One suits.

Procedural posture, venue, and significance. Filed June 25, 2014 in the U.S. District Court for the Southern District of New York (Foley Square), the case was assigned to Judge Alvin K. Hellerstein, who was simultaneously presiding over IV's related suit against JPMorgan Chase (No. 1:13-cv-03777-AKH); S.D.N.Y. was a natural forum because the defendants are New York–chartered/major banking institutions and because Judge Hellerstein could coordinate the bank cases. In December 2014 Hellerstein denied Citigroup's motion to stay pending the JPMorgan and Capital One matters, holding Citigroup had shown only the ordinary burden and cost of litigation (JD Supra, Dec. 9, 2014). IV then narrowed the case: it stipulated to dismissal with prejudice of the '574 claims (Nov. 30, 2015) and dismissal without prejudice of the '002 and '081 claims (Jan. 27, 2016), and the court denied Citigroup's partial-summary-judgment bid for issue preclusion on § 101 invalidity on Jan. 19, 2016 (Jeffer Mangels Patent Lawyer Blog, Feb. 2, 2016; firm representations PDF). Citigroup moved for invalidity of claim 4 of the '666 patent (denied July 10, 2017) and then for non-infringement of the '666 patent based on issue preclusion from Judge Hellerstein's JPMorgan § 101/non-infringement rulings (Aug. 14, 2017); the docket closed Oct. 9, 2017 — consistent with a defense win, though I did not retrieve the specific final order. IV appealed, and on December 17, 2018 the Federal Circuit affirmed under Fed. Cir. R. 36 (nonprecedential, per curiam: Newman, Plager, Moore) in Intellectual Ventures I/II LLC v. Citigroup, Inc., No. 2018-1024 (consolidated for argument with the JPMorgan appeal, No. 2017-2429). IV was represented by Matthew D. Powers and colleagues of Tensegrity Law Group; Citigroup by Brent P. Ray, Ryan M. Hubbard, Brian Verbus, Kenneth R. Adamo, and John C. O'Quinn of Kirkland & Ellis (Fed. Cir. judgment). The case is notable as one installment of IV's 2013–2014 campaign of roughly a dozen-plus lawsuits against major U.S. banks, which became a leading test of how § 101 Alice challenges and parallel PTAB proceedings would gut software/financial-services patent assertions. Several asserted patents here were separately challenged at the PTAB — e.g., IPR2014-00801 and IPR2014-00682 (Commerce Bancshares/Compass Bank/First National Bank of Omaha and IBM) on the '084 patent, and CBM2014-00033 (Bank of America) — reflecting the era's pattern of banks pooling IPR/CBM challenges against IV's portfolio; here, however, the decisive mechanism was non-infringement/issue preclusion flowing from the coordinated JPMorgan case, ending in a Federal Circuit affirmance rather than a PTAB-driven kill.

Sourcing note: docket metadata, party names, court, case number, and patents are taken from the authoritative case metadata and corroborated by the Stanford NPE Litigation Database (case/164620), Justia Dockets, and the consolidated Federal Circuit Rule 36 judgment. The procedural timeline (2015–2017 stipulations and summary-judgment motions) rests on a law-firm trial-counsel representations document and secondary blogs rather than retrieved PACER entries, so exact docket numbers and the precise final disposition order should be confirmed against PACER if needed.

Key legal developments & outcome

Major rulings, motions, claim construction, settlements, and the present posture or final disposition.

I'll research this case thoroughly using web searches.

I hit my search-step limit before I could exhaustively pull the PACER docket and every order, so I'm flagging confidence levels below. Here's what the record shows, in chronological order.

Threshold caveat on "patents at issue"

There is a real discrepancy that anyone relying on this file should know about. The case metadata lists 7,634,666; 6,715,084; 6,314,409; 5,745,574; and 6,826,694. But the court's own claim-construction orders and contemporaneous reporting identify a different five-patent set in the Citigroup case:

  • U.S. 6,819,271 ('271 — parallel compression/decompression)
  • U.S. 7,984,081 ('081 — XML document management)
  • U.S. 6,546,002 ('002 — intelligent/mobile menu-interface agent)
  • U.S. 7,634,666 ('666 — crypto-engine for cryptographic processing of data)
  • U.S. 5,745,574 ('574 — security infrastructure for electronic transactions)

Judge Hellerstein's Final Order Regarding Claim Construction and Patent Summaries, 14 Civ. 4638 (AKH), recites exactly those five patents as "the five patents asserted in this case" (reproduced as Ex. 1049 in IBM's IPR2014-01385): https://www.docketalarm.com/cases/PTAB/IPR2014-01385/Inter_Partes_Review_of_U.S._Pat._7984081/docs/08-18-2015-Petitioner/Exhibit-1049-Order_Regarding_Claim_Construction_Citigroup.pdf. The Dec. 9, 2014 JD Supra case note lists the same five: https://www.jdsupra.com/post/contentViewerEmbed.aspx?fid=e5b37392-30e9-4bdc-95fa-3211cb0d77b8.

The '084, '409 and '694 patents in the metadata were asserted in the companion case before the same judge — Intellectual Ventures II v. J.P. Morgan Chase, No. 13-cv-3777-AKH — where they were invalidated under § 101. See Fed. Cir., Intellectual Ventures I v. Capital One, 850 F.3d 1332 (2017-03-07) (discussing the JPMC court's invalidation of the '084 and '409 and IV's dismissal of the '694). It appears the metadata conflated the two IV/S.D.N.Y. cases. I've applied the metadata as instructed where it concerns party names, court and case number, but readers should treat the patent list with caution.

1. Filing & initial pleadings

  • 2014-06-25 — Complaint filed: Intellectual Ventures I LLC and Intellectual Ventures II LLC v. Citigroup, Inc., Citicorp, and Citibank, N.A., No. 1:14-cv-04638, S.D.N.Y. (Foley Square), assigned to Judge Alvin K. Hellerstein. Cause of action 35 U.S.C. § 271; jury demand by plaintiff. Docket: https://dockets.justia.com/docket/new-york/nysdce/1:2014cv04638/[429002](/patent/429002). The asserted portfolio related to "cyber security and the protection of customer payment information" (JD Supra, 2014-12-09).
  • The Stanford NPE Litigation Database records the case with seven patent numbers over time (5,455,945; 5,745,574; 6,189,271; 6,546,002; 6,819,271; 7,634,666; 7,984,081), suggesting the complaint/amended complaints evolved: https://npe.law.stanford.edu/case/164620.
  • Counsel of record. Defendants: Kirkland & Ellis — Kenneth R. Adamo, Brent P. Ray (per the Justia docket). Plaintiffs: Feinberg Day Alberti & Thompson (David Alberti, Sal Lim, Ian Feinberg, Marc C. Belloli, Elizabeth Day, Yakov Zolotorev, Nickolas Bohl, Peter Mikhail) with William I. Dunnegan as local counsel.
  • Answer/counterclaims. I could not verify the filing dates or the substantive content of Citigroup's answer and counterclaims in this specific docket. Citigroup did engage on the merits (stay motion, § 101 summary-judgment motions), but I won't state counterclaim details I can't source.

2. Pre-trial motions of substance

Motion to stay — denied 2014-12-09. Citigroup moved to stay pending two related matters: IV II v. J.P. Morgan Chase (also before Judge Hellerstein) and IV I v. Capital One. Judge Hellerstein denied the stay, reasoning that courts "are generally reluctant to stay proceedings out of concern for a plaintiff's right to proceed with [its] case"; only two of the five patents overlapped with the Chase matter, Citigroup had not agreed to be bound by adverse rulings, so "it is far from clear whether, and to what degree, resolution of the issues in the Chase Matter could conserve the resources of the parties and the Court"; and Citigroup showed nothing beyond the typical burden of litigation. Source: jdsupra.com (Dec. 9, 2014 note).

Motions for partial summary judgment of § 101 invalidity — denied 2016-01-19. Citigroup sought partial summary judgment invalidating two patents, arguing that two other courts had already found those patents ineligible (IV I v. Old Republic Gen. Ins. Grp., No. 2:14-cv-01130 (W.D. Pa. Sept. 25, 2015); IV II v. Capital One, No. 8:14-cv-00111 (D. Md. Sept. 2, 2015)) and that preclusion entitled it to judgment. Judge Hellerstein denied the motion and also denied a stay pending the Federal Circuit appeal, stating: "There is no point in dismissing these claims, when the patents may yet be held to cover eligible material," and "[t]he issues are before me, and if the defendants feel the District Courts that considered the 35 U.S.C. § 101 issue decided correctly, they may, by proper motion, seek to persuade me along the same lines." Source: Patent Lawyer Blog, 2016-02-02, http://patentlaw.jeffer.com/2016/02/district-court-denies-motion-t-13.html (citing IV v. Citigroup, No. 14-cv-4638 (AKH) (S.D.N.Y. Jan. 19, 2016)).

Transfer motion. No evidence of a § 1404 transfer motion; the case stayed in S.D.N.Y. through judgment.

3. Claim construction (Markman)

  • 2015-03-26 — Markman hearing before Judge Hellerstein on all five asserted patents. A patent tutorial was held beforehand (a March 5, 2014 tutorial transcript appears in the JPMC/PTAB record, and a 2013-10-29 tutorial transcript likewise).
  • 2015-05-19 — Provisional Order Regarding Claim Construction and Patent Summaries, ECF No. 77, 14 Civ. 4638 (AKH) (S.D.N.Y.), inviting supplemental submissions.
  • Later in 2015 — Final Order Regarding Claim Construction and Patent Summaries, modifying the provisional order in stated respects. The order itself confirms both patents and constructions, and it was docketed into the PTAB record as an exhibit in the parallel IPR (see link above). I could not retrieve the specific term-by-term constructions from the Citi order within my search budget.

The constructions in the parallel JPMC case are illustrative of Hellerstein's approach: e.g., on the '084 patent he construed terms such as "anomaly" collaboratively at the March 5, 2014 hearing (transcript in the CBM2014-00160 record), and in the '666 dispute he construed "sign inversion unit" as "a unit that changes positive numbers into negative numbers and negative numbers into positive numbers" (IV II v. JPMC, No. 13-cv-3777-AKH, 2016 BL 234506 (S.D.N.Y. July 21, 2016)).

4. Discovery milestones

I could not verify specific discovery orders, protective-order disputes, or ESI milestones on this docket within my search budget. The verifiable strategic beats are the case-management events that shaped the scope of discovery: the denied stay (2014-12-09), the Markman process (spring 2015), and the denied stay/§101 motions (2016-01-19). Note that the related JPMC case generated a large docket (hundreds of entries; IV's Rule 54(b) motion at JPMC ECF 527, decided 2015-10-14, referenced "not much discovery will remain" on the '666 patent), but that is the companion case, not this one.

5. Trial, verdict, post-trial motions

No trial or jury verdict is documented for this case. The case was resolved by court order, not by trial. No JMOL, new-trial, or fee motions are confirmed. The case is reported as closed on 2017-10-09 (Ex Parte case record: https://ai-lab.exparte.com/case/dct/nysd/1:14-cv-04638/intellecutal-ventures-i-llc-v-citigroup-inc). I could not retrieve the text of the dispositive order or final judgment; given the surrounding procedural history, the near-certain cause was the Federal Circuit's intervening invalidation of overlapping patents (below) plus/with collateral estoppel from the JPMC § 101 rulings.

6. Final disposition and appeal

Net outcome: judgment for Citigroup, affirmed. Because the affirmance was under Rule 36 (nonprecedential, no opinion), there is no reasoned appellate holding to cite on the merits.

7. Parallel PTAB proceedings and their effect

  • CBM2014-00157 — Covered Business Method review of U.S. 6,314,409 ('409). The exhibit list in this proceeding includes the IV–JPMC claim-construction hearing transcript and IV's infringement contentions, indicating a bank-side petitioner (document set: http://ocr.docketalarm.com/cases/PTAB/CBM2014-00157/...). The '409 patent was one of the patents invalidated in the JPMC case and later held preclusive against IV in Capital One.
  • CBM2014-00160 — J.P. Morgan Chase & Co. v. Intellectual Ventures II LLC, petition for CBM review of U.S. 5,745,574, filed 2014-07-18; patent-owner preliminary response 2014-11-03; institution DENIED 2015-01-29; refund issued 2015-07-02. Docket: https://services.patexia.com/lawsuits/JP-Morgan-Chase-%26-Co-et-al-v-Intellectual-Ventures-II-LLC-id-63991/documents. (The petition relied heavily on the district-court Markman record and IV's infringement contentions from the JPMC case.)
  • IPR2014-01385 — IBM v. Intellectual Ventures, inter partes review of U.S. 7,984,081 ('081). IBM's mandatory notices identify both IV v. Capital One (D. Md.) and this Citigroup case, 1:14-cv-4638, as related matters affecting or affected by the IPR, and note the D. Md. § 101 invalidity ruling. Docket: https://www.docketalarm.com/cases/PTAB/IPR2014-01385/.

Effect on the litigation. The PTAB petitions (largely filed by the bank-side defendants and IBM in mid-2014) overlapped with the asserted portfolios but did not produce a stay here — Judge Hellerstein twice declined to pause the case. The decisive validity events came instead from § 101 rulings in the sister cases, which the Federal Circuit consolidated into one body of law:

  • IV II v. JPMC, No. 13-cv-3777-AKH, 2015 WL 1941331 (S.D.N.Y. 2015-04-28) — '084 and '409 invalid under § 101 (and, per later orders, the '694 dismissed).
  • IV I v. Capital One Fin. Corp., 850 F.3d 1332 (Fed. Cir. 2017-03-07) — affirming §101 invalidity of the '081 and '002 patents and affirming collateral estoppel as to the '084 patent based on the JPMC partial summary judgment. Two of the Citi-case asserted patents ('081, '002) fell here, which is the most plausible trigger for the Citi case's 2017-10-09 termination. Opinion: https://cases.justia.com/federal/appellate-courts/cafc/16-1077/16-1077-2017-03-07.pdf. A parallel § 101 affirmance came in IV I v. Erie Indemnity Co. (Fed. Cir. 2017-03-07) as to the '002 patent.

Gaps / lower-confidence items

  1. Exact ground of the 2017 final judgment (invalidity under §101 via estoppel, non-infringement, or both) — not verified.
  2. Whether Citigroup filed counterclaims and their content — not verified.
  3. The specific Markman constructions in the Citi Final Order — not retrieved.
  4. Any § 285 fee motion or post-judgment motion — none found.
  5. The asserted-patent list discrepancy described at the top — resolved in favor of the court's own Markman order and contemporaneous reporting, but the metadata's five patents should be flagged for whoever maintains this case file.

If you want the definitive picture, the highest-value pulls would be the Citi docket entries around 2017-10-09 (final judgment) and the Final Order Regarding Claim Construction (14 Civ. 4638, ECF ~77–90), plus the JPMC ECF 527 order of 2015-10-14.

Plaintiff representatives

Counsel of record for the plaintiff(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

I'll research the counsel of record for the plaintiffs in this case.

Let me search the docket and related sources for appearances in the district court case.

Let me dig into the docket sheet and complaint signature blocks.

Defendant representatives

Counsel of record for the defendant(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).

I'll research the defendant-side counsel of record. Let me run several targeted searches.

Let me pull the docket attorney listings and check for local counsel.

Defendant-side counsel of record — Intellectual Ventures I/II LLC v. Citigroup, Inc., Citicorp, Citibank, N.A., No. 1:14-cv-04638-AKH (S.D.N.Y.)

Bottom line: Citigroup's defense was led by Kirkland & Ellis LLP, with the same core team appearing in the district court, in the parallel PTAB proceedings, and on the Federal Circuit appeal. The firm's IP litigation group (Kenneth R. Adamo, Brent P. Ray) was the constant; the New York office handled the case from Citigroup Center, so no separate local-counsel firm was needed. Below I separate what is verified from the docket/appellate/PTAB records from what I could not confirm before hitting my search-step limit.

Verified team (from the Federal Circuit judgment and PTAB records)

The single most reliable source for the identity of the defense team is the Federal Circuit Rule 36 judgment of Dec. 17, 2018 in the consolidated appeal (IV II/JPMorgan, No. 17-2429, and IV v. Citigroup, No. 2018-1024). The caption and counsel block list the defense representation:

Attorney Role (as shown) Firm / office Notes
Brent P. Ray Lead / arguing counsel for defendants-appellees (argued the Federal Circuit appeal; per BTI, "lead counsel in over 25 cases") Kirkland & Ellis LLP, Chicago, IL (300 N. LaSalle St.) Trial lawyer; first-chaired patent cases for Citibank, JPMorgan Chase, IBM, Intel, PayPal, CME Group, Shopify; admitted in IL, NY, TX and before the Federal Circuit and USPTO. Later moved to Arnold & Porter (per that firm's bio — "reflects experience at previous employer").
Kenneth R. Adamo Senior/lead district-court counsel Kirkland & Ellis LLP, New York, NY (Citigroup Center, 601 Lexington Ave.) USPTO Reg. No. 27,299; a fixture in IV's bank campaign — appeared for the bank side at the Markman/tutorial stage and in the IPRs.
Ryan M. Hubbard Of counsel / team member (appellate and district) Kirkland & Ellis LLP (Chicago) Appears in the Federal Circuit counsel block; also among Kirkland attorneys of record for the related IPR proceedings.
Brian Verbus Of counsel / team member Kirkland & Ellis LLP Same appearance grouping as Hubbard on the Federal Circuit judgment.
John C. O'Quinn Of counsel / appellate-side team member Kirkland & Ellis LLP, Washington, D.C. Listed on the Federal Circuit judgment for the Citigroup appellees.

Source: Fed. Cir. Rule 36 Judgment, No. 17-2429 (Dec. 17, 2018) — "BRENT P. RAY, Kirkland & Ellis LLP, Chicago, IL, argued for defendants-appellees. Also represented by RYAN M. HUBBARD, BRIAN VERBUS; KENNETH R. ADAMO, New York, NY; JOHN C. O'QUINN, Washington, DC." http://cafc.uscourts.gov/sites/default/files/opinions-orders/17-2429.Rule_36_Judgment.12-17-2018.1.pdf (mirrored at https://law.justia.com/cases/federal/appellate-courts/cafc/17-2429/17-2429-2018-12-17.html).

Corroborating evidence that Kirkland also held the district-court and PTAB representations

  • District court: The Justia docket for 1:14-cv-04638 lists Kenneth R. Adamo and Brent P. Ray (Kirkland & Ellis) as defendants' counsel of record (https://dockets.justia.com/docket/new-york/nysdce/1:2014cv04638/429002). This matches the appellate team, which is expected where the same firm carried the case through judgment.
  • The IV-versus-banks campaign was a Kirkland shop: A courtlistener expert-report exhibit identifying firms per lawsuit lists Kirkland & Ellis LLP as counsel in the companion Intellectual Ventures II v. JPMorgan Chase & Co., No. 1:13-cv-03777-AKH (S.D.N.Y.) — the coordinated case between the same judge. Kirkland thus represented the bank side in both S.D.N.Y. IV matters.
  • PTAB cross-over: Kirkland attorneys on the bank/IBM side in the parallel post-grant proceedings included Adamo (Reg. No. 27,299), Eugene Goryunov (Reg. No. 61,579), David W. Higer (pro hac vice), and J./"jmerkin" — see IBM's power of attorney and mandatory notices in IBM v. IV, IPR2014-01385 (which expressly identifies IV v. Citigroup, 1:14-cv-4638, as a related matter), and Kirkland's Goryunov appearing as counsel of record in the IPR depositions. These PTAB appearances are not the same as district-court appearances, but they show the same team litigating the same patents for the same client-side alignment.

What I could not verify (flagged, not filled in)

  • A complete district-court appearance list (every attorney who entered under Dkt. Nos. 1–~180). I could not retrieve the PACER docket sheet or the Ex Parte/Justia "Attorney" tab contents before exhausting my search budget, so I cannot rule out additional Kirkland associates who entered appearances, nor exclude the possibility that a New York local-counsel firm was used for service or for the trial-court pro hac vice administration. Because Kirkland maintains a Manhattan office (Citigroup Center, 601 Lexington Ave.) and Adamo is New York-based, no separate local-counsel firm was structurally necessary — but absence of proof here is not proof of absence.
  • In-house counsel. No Citigroup in-house attorney (e.g., from Citigroup's legal department) is identified in any source I retrieved. Many banks of this size assign in-house IP counsel; I will not name one without a source.
  • Exact entry dates and each attorney's first appearance. I could not pull the specific ECF entries showing when each Kirkland lawyer noticed their appearance.
  • Whether Adamo formally appeared in the Citigroup district court docket or only in the JPMorgan case. He is clearly listed for Citigroup on the Fed. Cir. judgment, and his name appears tied to the Citi matter in the Justia docket attribution, but the underlying district-court appearance entry is unconfirmed. Given the Federal Circuit listing, treat him as counsel of record for the appellees (i.e., for Citigroup) at least at the appellate stage.
  • Post-judgment / fee-motion counsel (if any). No § 285 fee motion was found in the earlier case analysis, so no additional counsel surfaced.

Sourcing caveats

Everything in the table above is drawn from the Federal Circuit judgment (primary, binding-grade for the appellate appearance) and PTAB filings (primary, for the post-grant appearances); the Justia docket attribution and the courtlistener firm table are secondary corroboration for the district-court and companion-case representation. Where a name appears only in an IPR or only on appeal, I have labeled it as such rather than asserting it as a district-court-of-record entry. If a definitive district-court roster is required, the highest-value pulls are the S.D.N.Y. docket sheet for 1:14-cv-04638 (attorney-filtered) and the appearance entries filed with the answer in late 2014.

Cross-reference note: This complements the "Plaintiff representatives" section (Feinberg Day Alberti & Thompson at the district court; Tensegrity Law Group on appeal). On the defense side, by contrast, Kirkland & Ellis carried the matter continuously from the district court through the Rule 36 affirmance — a single-firm, continuous representation rather than the plaintiff-side change of counsel.