DivX, LLC v. VIZIO, Inc.

I'll research this case thoroughly using web search before drafting.

Good initial material. Let me dig deeper on the patents, the ITC outcome, the licenses, and DivX's ownership structure.

I'll research this case systematically. Let me start with broad searches on the docket and related litigation.

Let me dig into the docket details, PTAB proceedings, and the ITC parallel.

Now let me confirm the asserted patents in the district court case and look at VIZIO's counsel and related DivX campaigns.

DivX, LLC v. VIZIO, Inc., No. 8:22-cv-01955-PSG-(DFMx) (C.D. Cal.) — Chronology of Key Developments and Outcome

Bottom line first: This case never reached the merits. It was filed 2022-10-24, transferred to Judge Gutierrez as related to DivX's Hulu case, and stayed on 2022-12-02 under 28 U.S.C. § 1659(a) because DivX had simultaneously filed an ITC § 337 complaint against VIZIO and Amazon. VIZIO never answered or counterclaimed. Roughly nine months later, DivX and VIZIO signed a global patent license (announced 2023-08-28), and the district court dismissed the case with prejudice on 2023-08-31 (Dkt. 21), with the ITC terminating VIZIO on 2023-10-11. There was no Markman, no discovery, no trial, no damages award, and no appeal. Note that the case-metadata status "pending/stayed" is stale; the authoritative docket shows the case closed in September 2023.

A caveat on the patent list: the metadata lists only the '588 patent (U.S. Pat. No. 10,225,588), but the complaint as filed asserted four patents: '588 ('588), 7,295,673 ('673), 11,102,553 ('553), and 11,050,808 ('808) — confirmed by contemporaneous campaign reporting and a complaint-level analysis. The '588 is definitely in; the other three are well-sourced but the operative infringement contentions were never served (the case was stayed before that stage).

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1. Filing and initial pleadings (Oct.–Nov. 2022)

Asserted patents and accused products. The four asserted patents: '588 ("Playback Devices and Methods for Playing Back Alternative Streams of Content Protected Using a Common Set of Cryptographic Keys"); '673 ("Method and System for Securing Compressed Digital Video"); '553 ("Systems and Methods for Secure Playback of Encrypted Elementary Bitstreams"); and '808 ("Systems and Methods for Seeking Within Multimedia Content During Streaming Playback"). Accused products: VIZIO D-, M-, P-, V-Series and OLED 4K HDR smart TVs running the SmartCast platform, accused both directly and via inducement (third-party streaming apps and end users). Theory of notice/willfulness rested on the ITC complaint served the same day. DivX pleaded a domestic-industry/licensing narrative, citing licenses with Disney and Element TV.

Counsel of record (from the docket): Plaintiff DivX — Tensegrity Law Group LLP (Matthew D. Powers, Paul T. Ehrlich, Natasha M. Saputo, Azra M. Hadzimehmedovic, Jerome Ma, William P. Nelson). Defendant VIZIO — Zhaoxin Yin and Zachariah B. Summers were the signatories on the stay filings (I could not confirm which firm represented VIZIO in this case; Akin Gump represented VIZIO in the contemporaneous Maxell litigation, so a firm attribution here would be an inference, not a sourced fact).

Answer / counterclaims: none. VIZIO's responsive deadline was pushed to 2022-12-16, then the stay order gave VIZIO "thirty (30) days from the lifting of the stay" to respond. The stay was never lifted, so no answer, no counterclaims, and no invalidity contentions were ever filed in this docket.

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2. Pre-trial motions of substance

The only substantive motion was VIZIO's motion to stay — and it ended the case's active life.

• 2022-12-01 — Dkt. 17: VIZIO's unopposed motion to stay the case pending disposition of the related ITC proceeding, expressly under 28 U.S.C. § 1659(a) (attachments: Summers declaration; Ex. A ITC Complaint; Ex. B Notice of Institution; proposed order), noticed for hearing 2022-12-09.
• 2022-12-02 — Dkt. 18: Clerk's Notice of Deficiencies (defective hearing information) — a housekeeping filing only.
• 2022-12-02 (entered 2022-12-05) — Dkt. 19: Order granting the stay (Judge Gutierrez). The case is "STAYED until further order"; VIZIO gets 30 days from lifting the stay to respond; the case is "administratively closed and may be reopened by application of any party" (MD JS-6, case terminated).

Not present in this case: no Rule 12(b) motion to dismiss, no § 1404/1406 transfer motion (only the intra-district related-case reassignment), no motion to stay pending IPR (none was needed — the statutory ITC stay was mandatory once the Commission instituted), and no summary-judgment practice.

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3. Claim construction (Markman)

Never reached. The case was stayed roughly five weeks after filing, before the Local Rule 3-1 / Patent Local Rules exchange. There is therefore no district-court claim-construction ruling on the '588 or any other asserted patent in this case. The only construction activity touching these patents occurred in the parallel PTAB/Federal Circuit track (see §7) and in the ITC's final ID (see §6).

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4. Discovery milestones

None of strategic significance. No scheduling order, no Rule 26(f) conference, no infringement contentions, no document production, and no depositions occurred before the stay. The case was administratively closed at the pleading stage.

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5. Trial, verdict, post-trial motions

None. No trial date, no verdict, no JMOL/new-trial/fee motions. Because the case settled via a license, there is also no prevailing-party determination and no fee award — the dismissal order expressly states that "all attorneys' fees, costs of court and expenses shall be borne by each party incurring the same."

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6. Settlement, dismissal, and final disposition (2023)

ITC parallel (Inv. No. 337-TA-1343) — the reason for the stay:

• 2022-11-22/23 Commission orders institution (published 2022-11-29, 87 Fed. Reg. 73328). Asserted: claims of the '808, '297 (8,832,297), '673, '588, and '553 patents. Respondents: Amazon and VIZIO. This instituted investigation is what triggered the mandatory § 1659(a) stay of the district case.
• 2023-08-21 — Order No. 30: DivX's '808 allegations terminated as to Amazon (so the '808 dropped out of the ITC entirely).
• 2023-08-30 — DivX files unopposed motion to terminate as to VIZIO based on settlement and withdrawal of the complaint as to VIZIO.
• 2023-09-11 — ALJ Order No. 33 grants termination as to VIZIO; 2023-10-11 the Commission declines review, terminating VIZIO from the investigation.
• 2023-12-20 / 2024-01-08 — Order No. 53 grants partial termination of various claims ('553 claims 12, 13, 15, 16; '588 claims 3, 4, 8, 9, 10; '297 claim 4; '673 claim 31); Commission declines review.
• 2024-05-29 — ALJ final ID: no violation — accused products do not infringe any asserted claim of the '673, '297, '588, or '553 patents; the domestic-industry requirement (technical and economic prongs) is not satisfied; and no clear-and-convincing showing of invalidity.
• 2024-08-30 — Commission reviews in part and affirms the finding of no violation; investigation terminated.

Why this matters for the VIZIO case: the only adjudicated merits record on the patents DivX had asserted against VIZIO (via the ITC) came out against DivX on infringement and domestic industry in mid-2024. That outcome vindicated the timing of VIZIO's early settlement/license in August 2023 — and undercuts any inference that the dismissal reflected weakness in VIZIO's position or a plaintiff's verdict premium. DivX's parallel EDVA case against Amazon (3:22-cv-00687) was also voluntarily dismissed in January 2025 and refiled that month as a new case (3:24-cv-00818) asserting six entirely different patents (9,955,195; 10,412,141; 10,542,303; 10,715,806; 11,245,938; 11,611,785).

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7. Parallel PTAB proceedings on the asserted patents

The '588 patent (the metadata-identified patent) has been under IPR attack by Netflix/Hulu since 2020, and its validity remains unresolved today. For VIZIO, this was directly relevant risk: had the case gone forward, the '588's validity would have been in flux at the Board.

• 2020-02-18 — Netflix, Inc. and Hulu, LLC v. DivX, LLC, IPR2020-00558, challenging all claims 1–24 of the '588 patent under § 103 over Chen (US 2011/0096828) + Lindahl (US 2007/0083467) + Hurst (US 8,683,066).
• 2020-08-26 — Board institutes review (Petitioner's expert: Dr. Patrick McDaniel; Patent Owner's: Dr. Seth Nielson / Dr. Chandrajit Bajaj).
• 2021-08-23 — Final Written Decision: no challenged claims unpatentable (2021 WL 3729361). Board found motivation to combine, but no reasonable expectation of success in combining Lindahl's partial-frame encryption into Chen's system (scalability/FEC incompatibility; file-format modification concerns).
• 2023-03-01 — Fed. Cir. No. 2022-1083 (nonprecedential): vacated and remanded. The Board legally erred by evaluating a combination with Chen's inventive "system" rather than with the pre-Chen-art teachings the petition actually relied on (SAS/EWP principles). No ruling on the claim construction.
• 2024-02-22 — Board Final Written Decision on remand: again no unpatentability (2024 WL 734765), but this time by adopting DivX's construction of claim 1 limitation [l] — that "encryption information" itself must be located "within the requested portions of the selected stream of protected video." Over a dissent (which would have found all claims unpatentable).
• 2026-02-13 — Fed. Cir. No. 2024-1541, Netflix, Inc. v. DivX, LLC (Taranto, J.; Moore, C.J., and Dyk, J.): reversed the Board's construction (the "within the requested portions" modifier attaches to "encrypted portions of frames of video," not to "encryption information"), held that limitation [l] so construed is indisputably taught by the asserted prior-art combination, and vacated and remanded. As of today (2026-09-30), that remand is pending at the Board, meaning the '588 claims face a materially increased risk of being held unpatentable. A secondary case summary (cojk.com) reports that after this reversal DivX gave Netflix a covenant rather than continue asserting the '588 in the Netflix district case — I have not confirmed that with a primary source, so treat it as unverified.

Related PTAB activity on other DivX patents (context, not asserted against VIZIO here):

• IPR2020-00646 (Netflix v. DivX, U.S. Pat. No. 8,472,792, "Multimedia Distribution System"): FWD for DivX; Fed. Cir. vacated and remanded, 80 F.4th 1352 (2023-09-11); on remand the Board found all challenged claims unpatentable.
• Hulu was terminated as a party in the '792 IPR (Hulu's C.D. Cal. case, No. 2:19-cv-01606, was dismissed 2022-08-25).

No VIZIO-filed IPR/PGR against the '588, '673, '553, or '808 appears in the record — consistent with VIZIO's strategy of seeking a § 1659 ITC stay and then settling quickly. (The ITC record does show VIZIO's counsel litigating IPRs elsewhere, e.g., IPR2022-01463 against Maxell, but that is a different dispute.)

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8. Net assessment

• Pre-trial substance: one motion — VIZIO's unopposed § 1659(a) stay motion (Dkt. 17), granted at Dkt. 19 on 2022-12-02.
• Claim construction / discovery / trial / post-trial: none.
• Disposition: dismissed with prejudice 2023-08-31 (Dkt. 21) pursuant to a global DivX–VIZIO patent license announced 2023-08-28, coupled with ITC termination of VIZIO (Order No. 33, 2023-09-11; Commission notice 2023-10-11). Each side bore its own fees and costs. No appeal.
• Present posture: closed and final as between DivX and VIZIO. The residual litigation risk is now entirely on the patent side, not the case side — the '588 patent is back at the PTAB on remand after the 2026-02-13 Federal Circuit decision (No. 2024-1541) that reversed the Board's construction and held the disputed limitation taught by the prior art.
• Sourcing note: the docket entries above are corroborated across Patexia/Unified Patents/UniCourt docket listings and primary agency documents (ITC Federal Register notices, Fed. Cir. opinions). The four-patent assertion set comes from campaign reporting and complaint-level analysis rather than a PACER pull of Dkt. 1 itself; the '808 claim set and the exact claim numbers DivX asserted in this district case were never memorialized because no infringement contentions were served. Counsel-firm attribution for VIZIO in this specific case is unconfirmed.

I'll research the counsel of record for DivX, LLC in this case.

I found an initial list of plaintiff-side attorneys. Let me verify each name and their firms.

DivX's counsel appears to be Tensegrity Law Group. Let me confirm the specific appearances in this case's docket.

I have strong confirmation. Let me do one final check on the complaint's signature block and the case outcome.

I'll research the docket and counsel appearances for VIZIO in this case.

Now let me identify the firms for the two appearing defense attorneys, plus check for any other counsel.

Both VIZIO counsel appear to be Quinn Emanuel attorneys. Let me verify their current status/firm and check for any additional appearances or in-house counsel.

Counsel of Record for Defendant VIZIO, Inc. — 8:22-cv-01955 (C.D. Cal.)

Bottom line

Only two attorneys appear as counsel of record for VIZIO on this docket, both from Quinn Emanuel Urquhart & Sullivan LLP's Los Angeles office — the same firm that has served as VIZIO's outside patent-defense counsel in its prior C.D. Cal. matters:

Sources for the appearances: Docket Dkts. 11 and 12 (both filed Nov. 7, 2022, G-123 Notices of Appearance adding Zachariah B. Summers and Zhaoxin Yin as counsel of record for VIZIO, Inc.), as reflected on Justia, Patexia's docket view, Unified Patents' portal, and UniCourt's attorney list. Motions signed/filed by Ms. Yin (Dkt. 15, Dkt. 17) and the Summers Declaration (Dkt. 17-1) confirm their respective roles in practice.

Caveats and things I could not confirm

• Firm attribution is inferred, not read off the G-123 forms in this case. The docket text for Dkts. 11–12 does not reproduce the firm block. I attribute both attorneys to Quinn Emanuel based on (a) California State Bar records for SBN 325589 showing Quinn Emanuel's 865 S. Figueroa St. address; (b) Ms. Yin's G-123 form in a sibling C.D. Cal. VIZIO case listing Quinn Emanuel; and (c) Summers' signature blocks on VIZIO filings in Polaris PowerLED v. VIZIO, 8:18-cv-01571, and the Quinn Emanuel website bio confirming the VIZIO relationship. If you need this at a "certify to the client" level, pull the actual Dkts. 11 and 12 PDFs from PACER.
• No local-counsel or separate-firm appearance, and no in-house counsel of record, appears on this docket. Quinn Emanuel's L.A. office satisfies the local-counsel function. There were also no pro hac vice appearances — the docket stops at Dkt. 22, so the record is very thin (2 appearances total).
• Yin's current title is uncertain. Public sources (Cal Bar, court filings) establish him as a Quinn Emanuel attorney in Los Angeles; I found no reliable source confirming whether he has since been elevated to partner, so I describe him neutrally.
• Summers' title has shifted over time: a 2021 IPR declaration describes him as "of counsel," while the firm's current bio lists him as a partner. I use "partner" per the firm website.

Contradiction with the case metadata — flag this explicitly

The metadata for this matter says "pending/stayed." That is no longer accurate as of the docket:

• Dkt. 19 (Dec. 2, 2022) — Order granting VIZIO's unopposed motion to stay pending ITC proceedings under 28 U.S.C. § 1659(a); case administratively closed (JS-6).
• Dkt. 20 (Aug. 28, 2023) — Joint stipulation to dismiss filed by DivX.
• Dkt. 21 (Aug. 31, 2023) — Order of dismissal with prejudice (Gutierrez, J.), each party bearing its own fees/costs.
• Dkt. 22 (Sept. 1, 2023) — Report on the determination of the action (patent case closing).

So VIZIO never answered the complaint; the case was stayed and then dismissed with prejudice roughly nine months later, consistent with the collateral ITC track. This also means there is no answer/counterclaim signature block to cross-check counsel (a normal secondary source for defense counsel lists).