Litigation

Agere Systems Inc. v. Sony Corporation et al.

closed

2:06-cv-00079-TJW-CE

Filed
2006-03-01
Terminated
2008-11-17

Patents at issue (2)

6452958
6707867

Plaintiffs (1)

Summary

Patent infringement suit by Agere against Sony entities. The case produced a 2008 Markman ruling on the '958 'complementary code' limitation and closed in November 2008 without a merits judgment on the '958 patent.

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 to ground the overview in verifiable sources.

Key finding: the trial verdict was on a third patent (the '730). Let me dig into the docket chronology, the verdict, and the two patents named in the metadata.

Critical context: these two patents later became IEEE 802.11 standard-essential patents in LSI/Agere's ITC and RAND campaigns. Let me verify the docket chronology, verdict, and later IPR/litigation history.

Case Overview & Background — Agere Systems Inc. v. Sony Corp., No. 2:06-cv-00079-TJW-CE (E.D. Tex.)

The parties. Agere Systems Inc. was an operating semiconductor/components company — the microelectronics spin-off of Lucent Technologies (which itself inherited AT&T's patent portfolio, including the 802.11 work of Bell Labs researcher Richard van Nee). Agere was a product company, not a PAE: the Stanford NPE Litigation Database classifies it in category 8 ("product company") and logs both the '958 and '867 patents in this suit. Agere ceased to exist as an independent entity when it merged into LSI Logic in 2007, and LSI (later Avago/Broadcom) continued to assert the portfolio. On the defense side, the four named Sony entities — Sony Corporation (Japan parent), Sony Corporation of America, Sony Electronics, Inc., and Sony Computer Entertainment America, Inc. — covered both the consumer-electronics and PlayStation/gaming distribution channels. Sony's core defenses were a 1989 AT&T/Lucent cross-license covering most of the originally asserted patents, plus invalidity and a challenge to how Agere had obtained the patents (contemporaneous coverage, e.g., Engadget, July 2006; heise).

The technology and patents. The March 1, 2006 complaint (Justia docket) asserted eight Agere patents spanning WLAN apparatus, audio-coding/"music chip" memory protocols, and semiconductor process claims, aimed at products including the PSP, PS2/PS3, VAIO PCs, Network Walkman players, Memory Stick Duo, LocationFree TV, and Handycams. The two patents this case is indexed under are both Bell Labs-origin WLAN patents: U.S. 6,452,958 (van Nee, "Digital Modulation System Using Extended Code Set," issued Sept. 17, 2002) claims a modulation scheme using a code set of M codes of length N where M > N, built from orthogonal and/or complementary codes so that a small (near-zero) cross-correlation is preserved while data rate rises toward 10 Mbps at 11 Mcps — the intellectual lineage of 802.11b's complementary-code-keying physical layer; and U.S. 6,707,867 (Diepstraten/van Bokhorst/van Driest, "Wireless Local Area Network Apparatus," 1993 GB priority, originally NCR/AT&T) claims WLAN synchronization in which a transmitter's timestamp field carries a timer value m that a receiver loads into its own counter to align wake-up/power-save and frequency-hopping operations — i.e., the 802.11 timing-synchronization function. Judge Everingham's claim-construction opinion addressed the '958 "code" term (rejecting Agere's "spreading sequence" gloss and holding, with Sony, that codes must be real-valued, not complex) and construed the '867 "receiver"/"transmitter" terms to not require an antenna, while declining to import the modulo-n counter into "timestamp" (Markman opinion, Doc. 178). Notably, however, the claims that actually went to trial and produced the damages award were on a different patent — U.S. 5,670,730 (a protocol for labeling/indexing pre-recorded audio in a memory chip) — and it was there that the court distinguished "first header" from "global header," a construction later cited in follow-on cases (see the Casetext citing references).

Posture, venue, and why the case matters. Filed in the Marshall Division of the Eastern District of Texas before Judge T. John Ward (the "TJW" in the docket number), with pretrial/claim-construction work referred to Magistrate Judge Charles Everingham ("CE"), who signed the May 15, 2008 Markman memorandum opinion and order (2008 WL 2078308; 2008 U.S. Dist. LEXIS 39605). This was filed at the height of Marshall's reputation as the plaintiffs' venue of choice — Judge Ward's "rocket docket" and high plaintiff win rates drew national attention and eventually congressional scrutiny (the 2011 GAO study and later TC Heartland/In re TS Tech venue fights). The case terminated November 17, 2008, on the heels of a Marshall jury verdict finding willful infringement of the '730 patent by the PSP, mylo Personal Communicator, and Network Walkman, with $18.5 million in compensatory royalties (the seven other patents having dropped out, largely on the Lucent cross-license) (Ars Technica; GameSpot; heise). The '958 and '867 counts thus closed without a merits adjudication — consistent with the existing case summary and with the fact that the patents were later described as already licensed to Sony, Acer, and Mitsumi. The real significance is downstream: the '958 and '867 became declared IEEE 802.11 standard-essential patents, and LSI/Agere's assertion of them against Funai, MediaTek, Ralink and Realtek at the ITC (Inv. No. 337-TA-837, "Certain Audiovisual Components and Products Containing the Same," filed March 12, 2012) and in C.D. Cal. produced Realtek Semiconductor Corp. v. LSI Corp., 946 F. Supp. 2d 998 (N.D. Cal. 2013) (Judge Whyte), which preliminarily enjoined enforcement of any ITC exclusion order and granted partial summary judgment that LSI breached its RAND obligations by seeking injunctive relief before offering a license — the court calling LSI's position "hypocritical." That RAND/SEP holding is the case's main doctrinal legacy, making Agere v. Sony an early chapter in the operating-company-SEP-monetization story that later defined the LSI/Avago and Broadcom portfolios.

Sourcing caveats. The docket numbers, filing/termination dates, presiding judges, and the May 15, 2008 Markman opinion (Doc. 178) are verified via PACER-derived records (CourtListener, Justia) and the opinion text. Three points I could not verify from primary sources and would flag before publication: (1) the precise docket entries resolving the '958/'867 counts (press accounts attribute the dismissal to the Lucent cross-license, but I have not seen the stipulation or order); (2) whether the $18.5M verdict was followed by any enhancement ruling, ongoing royalty, or appeal — the case terminated the same week as the verdict, which suggests a negotiated resolution, but that is inference, not record; and (3) any IPR/PGR history on the '958 or '867 — I found no PTAB proceedings, and post-issuance validity attacks on these patents appear to have run through the Realtek declaratory-judgment/ITC track rather than the PTAB. Also note a discrepancy worth resolving against the docket: one patent's reference list describes Agere's original March 2006 pleading in this very case as a "Complaint for Patent Interference," hinting at an inventorship/ownership count (echoed by Sony's "improperly obtained" defense in press reports), which I could not confirm.

Key legal developments & outcome

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

I'll research this case systematically, starting with the docket and key rulings.

Important framing note before the chronology

The metadata for this case lists only the '958 and '867 patents, and the existing summary correctly notes the case "closed in November 2008 without a merits judgment on the '958 patent." My research confirms why that is true, and it requires stating up front: as filed, this case was a multi-patent, eight-patent campaign, and the only patent that reached a jury verdict was U.S. Patent No. 5,670,730 (the "music-chip / header" patent) — not the '958 or '867. Contemporaneous reporting is consistent on that point (Gamespot, Digital Trends, heise), and the 2008 Markman opinion (Doc. 178) construes claim terms across several patents, including the '958 (van Nee), the '867, the '739 and the '730.

I flag confidence levels below because the RECAP/CourtListener docket for this case is only partially populated; I was unable to retrieve the full entry-by-entry docket text, so several procedural specifics (exact answer date, any transfer/stay motion, the JMOL/new-trial orders) are not verified and should be confirmed by pulling the docket.

Chronology of key legal developments

1. Filing and initial pleadings (2006-03-01)

2. Pre-trial motions of substance

  • Case narrowing (2006–2008): The eight-patent complaint was progressively reduced — some patents were dismissed by the court and others resolved through the Lucent license. This is confirmed in substance but no specific order/entry numbers are verified from the docket I could access; the Markman opinion itself notes that one patent had already been dismissed from the case before the hearing. (Studicata summary: https://www.studicata.com/summaries/united-states-district-court-eastern-district-of-texas/agere-systems-inc-v-sony-corporation-2008-baak1m/)
  • No transfer motion succeeded; the case stayed in Judge Ward's Marshall court throughout. Given the 2006 filing date, there was no stay-pending-IPR motion and none could have been — IPR did not exist as a proceeding until the AIA's effective date of 2012-09-16, four years after this case closed.

3. Claim construction (Markman) — 2008-05-15 — the pivotal ruling

Memorandum Opinion and Order, Doc. 178 (41 pages), Judge Charles Everingham, 2008-05-15, reported at 2008 WL 2078308 and 2008 U.S. Dist. LEXIS 39605. Full text: https://archive.org/download/gov.uscourts.txed.95285/gov.uscourts.txed.95285.178.0.pdf and https://ipmall.info/sites/default/files/hosted_resources/Markman/pdfFiles/2008.05.15_AGERE_SYSTEMS_INC_v._SONY_CO.pdf

Key outcomes:

  • '958 (van Nee) — "code": Court rejected Agere's "spreading sequence to be used to phase modulate a single carrier frequency" and held a "code" is "a sequence of chips."
  • '958 — real vs. complex codes (the dispositive narrowing): The court agreed with Sony that in the '958 specification codes are "real" codes and "cannot therefore be 'complex' codes (real part plus imaginary part)." This is the "complementary code" limitation referenced in the case summary, and it materially narrowed Agere's '958 theory — the court accepted Sony's argument that the full-rate/fallback embodiments depicted only work with real-valued codes, rejecting Agere's Euler's-equation/complex-value reading of Figure 3.
  • '730 — "first header" vs. "global header": The court construed the two terms differently, treating "global header" as "a more restrictive term." Sony had sought a "single data structure" construction (that all pre-recorded audio tracks are encoded for storage in memory and used by the player to decode all tracks). This construction has had an active subsequent life — it was applied and discussed in later E.D. Tex. litigation (e.g., the Barnes & Noble line of cases). (Casetext citator: http://g.casetext.com/case/agere-systems/how-cited)
  • '730/related — "annealing": construed as "heating to a temperature and for a duration sufficient to cause a desired change in the microstructure or in the physical and/or mechanical properties" (2008 U.S. Dist. LEXIS 39605, at *60).
  • '739 — timestamp limitations: The court rejected both sides' constructions: it disapproved Agere's proposals as improperly broadening the claims, but also refused Sony's prosecution-history-based narrowing to the modulo-n counter embodiment, because the applicants did not "clearly and unmistakably" surrender that scope. It adopted the parties' agreed construction of "periodically" = "at regular intervals," and adopted Agere's error-correction construction of the "header field ... transmitted before the timestamp and a traffic pending field" limitation.
  • Jury hygiene order: The court barred the parties from referring, directly or indirectly, to each other's claim-construction positions before the jury, and limited any reference to the adopted definitions.
  • Strategic significance: The mixed result was a net loss for Agere on its wireless/WLAN patents (the '958 "real code" limitation and the '739 result undercut the WLAN theory), while giving Agere a workable '730 construction and giving Sony a narrower "global header" reading. That asymmetry is consistent with the case ultimately going to verdict only on the '730.

4. Discovery milestones of strategic significance

  • The only discovery events I can verify from primary documents are expert depositions used as claim-construction evidence — the '958 opinion expressly cites "the deposition transcript of Sony's expert" on the "code" term, and the prosecution-history argument on the '739 relied on Agere's July 17, 1995 appeal brief and related file-history exhibits (AGE0000586–97).
  • Not verified: the close of fact/Expert discovery dates, any discovery sanctions orders, or any 30(b)(6) disputes. There is no indication in the sources I could reach of a discovery ruling that changed the case's trajectory; the case's pivot points were the license defense and the Markman narrowing.

5. Trial, verdict, and post-trial motions

  • November 2008 jury trial in Marshall before Judge Ward. The jury found:
    • Willful infringement of U.S. Patent No. 5,670,730 — with the verdict form stating there was "clear and convincing evidence that such infringement was willful";
    • $18.5 million in compensatory royalty damages to Agere (LSI);
    • Rejection of Sony's invalidity defense;
    • Accused products: PlayStation Portable (PSP), mylo Personal Communicator, and Network Walkman (some accounts describe the technology generically as "wireless local area network apparatus," but the most

In the news

What the press has reported about this case, summarized with links to the source articles.

I'll search across multiple angles for press coverage of this case.

Key finding: press coverage centers on the $18.5M verdict on the '730 patent. Let me dig into that and check for coverage of the '958/'867 patents and any appeal/settlement.

Now let me look for legal-trade coverage (Law360, IPWatchdog) and any reporting on the '958/'867 WLAN patents specifically.

Press coverage: Agere Systems v. Sony (E.D. Tex. 2:06-cv-00079)

Important framing note up front: press coverage of this docket is overwhelmingly about the '730 patent (U.S. 5,670,730), the music-chip data-protocol patent that was the only patent to reach a jury in this case. My searches surfaced no press reporting at all on the two patents in the case metadata — the '958 "complementary code" patent and the '867 timing/timestamp patent — and none on the May 15, 2008 Markman ruling (Doc. 178) construing them. Searches for Reuters, Bloomberg Law, Law360, IPWatchdog, Patently-O and JD Supra coverage returned nothing attributable to those outlets for this case; the coverage that exists is from gaming/consumer-tech outlets, one regional legal newspaper, and European tech press.

The coverage splits into two waves. At filing, GameSpot reported that Agere, a Pennsylvania-based Lucent spinoff, sued Sony entities in the Eastern District of Texas for willful infringement of eight patents, naming the PSP, PlayStation 2, the then-unreleased PlayStation 3 (based on announced specs), VAIO computers, Handycams, Walkman players, Memory Stick Duo and Location Free TV, and seeking an accounting of gains plus up to treble damages; the same piece reported Sony's defense that a 1989 cross-license with AT&T and Lucent covered seven of the eight patents and that the patents were invalid. The verdict wave came in November 2008. The Southeast Texas Record reported that trial began November 13 before Magistrate Judge Charles Everingham in Marshall, and that on Monday, November 17, 2008 the jury found Sony literally infringed and induced infringement of the '730 patent, found clear and convincing evidence of willfulness, and calculated a reasonable royalty of $18.5 million; it named Calvin Capshaw of Brown McCarroll (Longview) for Agere and Melvin Wilcox III of Yarbrough Wilcox (Tyler) for Sony. Ars Technica said the dispute "came to an end" that day with the same figure, and Engadget (Nov. 20, 2008) and GamesIndustry.biz reported the same verdict, identifying the infringing products as the mylo Personal Communicator, PSP and Network Walkman players.

Where accounts diverge. The outlets disagree on why seven of eight patents fell away. Ars Technica and Digital Trends both state Sony "was cleared" or "found not to be infringing" on seven patents because of the Lucent license; the Southeast Texas Record, closer to the record, says some were settled, some dismissed after Agere dropped claims, and some dismissed because the patent had been reassigned to another party after filing. The number itself wobbles: Digital Trends reported "$18.4 million" in its lede while using $18.5 million later; heise online converted to 18.5 million USD for German readers, and Eurogamer.pt reported €14.8 million. Most consequentially, several outlets misidentified the patent: TechSpot, GamesIndustry.biz and a Korean IP-office summary of the case (via KIPO) described the infringed patent as a "wireless local area network apparatus" — i.e., they conflated the '730 music-chip patent with the separate WLAN patent family that included the '958 patent. That conflation is the closest the press came to the '958 patent, and it did so erroneously.

Commentary beyond the record. The editorializing is explicit. Ars Technica called the award "the barest slap on the wrist to a multibillion-dollar company" but "a victory in principle," framing it as proof the system protects small companies — while also calling the '730 "the type of broad description that makes us grind our teeth." Digital Trends echoed that $18.5 million "isn't a significant financial burden" but signals that patent holders "can, sometimes, stand up in court against giant multinational corporations." GamesIndustry.biz and domain-b both went beyond the verdict to speculate that Agere had originally demanded lost profits plus treble damages, and that "it is unclear how much of that is totaled in the $18.5 million." GameSpot situated the result in Sony's broader patent-war narrative, noting Agere "has ceased to exist," having merged into LSI Corporation in 2007, and pairing it with Sony's 2005 Immersion force-feedback loss; ShackNews and Engadget similarly tied the verdict to Sony's Blu-ray and Immersion disputes.

Gaps. I found no reporting on an appeal, post-verdict settlement, or enhanced-damages ruling, and no coverage of the '958/'867 Markman proceeding — consistent with the record's showing that the case closed on November 17, 2008 with no merits judgment on the '958 patent. Any account of the '958 or '867 patents in this case therefore rests on the court record (Doc. 178) rather than on press reporting.

Sources

Plaintiff representatives

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

I'll research the plaintiff's counsel of record using docket sources, court opinions, and firm records.

Defendant representatives

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

I'll research defense counsel using the docket record, the Markman opinion, and press/trade coverage.

Counsel of Record for Defendants — Agere Systems Inc. v. Sony Corp., No. 2:06-cv-00079-TJW-CE

Bottom line and a candid limitation up front: I was able to verify only one defense attorney of record from a reliable source — Melvin R. Wilcox III of Yarbrough ● Wilcox, PLLC (Tyler, Texas), whom the Southeast Texas Record's trial report names as Sony's representative at the November 2008 trial, and whose firm's signature blocks in contemporaneous, parallel Sony matters in the same court confirm the representation. I could not pull the full docket-sheet attorney roster (the CourtListener/Justia entry pages for this case are not fully text-indexed, and the RECAP PDFs for the early 2006 appearances are not surfaced in searchable form). I have deliberately not named any national/lead counsel, because I cannot ground a name for this docket. Details on where the remaining names sit and how to confirm them are below.

Verified

Attorney Role Firm / Office Notes
Melvin R. Wilcox III (Tex. Bar No. 21454800) Lead trial counsel for Sony (and, per firm practice, local/E.D. Tex. counsel) Yarbrough ● Wilcox, PLLC, 100 E. Ferguson St., Suite 1015, Tyler, TX 75702; tel. (903) 595-1133 / 595-3111; fax (903) 595-0191; mrw@yw-lawfirm.com The Southeast Texas Record's verdict report states flatly that "Melvin Wilcox III of Yarbrough Wilcox PLLC in Tyler represented Sony," opposite Calvin Capshaw of Brown McCarroll (Longview) for Agere. His firm served as East Texas counsel to the same Sony entities in the near-simultaneous Certicom Corp. v. Sony Corp., No. 2:07-cv-216-TJW (E.D. Tex.) and in No. 2:07-cv-473-TJW, signing Sony's invalidity-contentions motion, Rule 26 initial disclosures, and notices of electronic filing — i.e., he was Sony's standing Marshall/Tyler patent counsel in this period, not a one-off. A career East Texas patent litigator (also appearing for non-Sony clients such as Specific Media in E.D. Tex.).

Signature-block sourcing: Certicom v. Sony, No. 2:07-cv-216-TJW, Dkt. 36 (initial disclosures); Certicom v. Sony, Dkt. 48 (agreed motion re: amended invalidity contentions); No. 2:07-cv-473-TJW, Dkt. 1142 (notice of request for termination of electronic notices, May 4, 2011). Trial attribution: Southeast Texas Record verdict report.

Not verified — do not publish without docket confirmation

  • National/lead counsel. In 2006–2008 Sony typically paired East Texas local counsel with a national IP firm (the Certicom parallel case shows a Kenyon & Kenyon attorney, Michelle Carniaux, filing a supporting declaration for Sony, and Kenyon & Kenyon was a frequent Sony outside IP firm of that era). That is inference from a different docket, not proof of appearance here, and I am not naming anyone as this case's lead counsel on that basis. This is exactly the gap a reader would expect filled, so flag it as open rather than assumed.
  • In-house counsel. Sony Electronics' long-time in-house patent counsel in this period appears in unrelated filings as Lloyd B. Sarakin (1 Sony Drive, Park Ridge, NJ), but I found no appearance or signature by him in this docket. Do not attribute.
  • Additional local counsel. No second E.D. Tex. firm for Sony is confirmed for this case. (Note the Certicom-era signature blocks involved multiple firms for the Sony family; the same may be true here, but I cannot show it.)

How to close the gap (specific, fast)

  1. CourtListener docket 4808158 — docket page. The attorney roster is populated from the appearances; the earliest entries (roughly Dkts. 1–30, spring 2006) will contain Sony's Answer, Rule 7.1 corporate disclosure statement, and any pro hac vice applications, each listing full defense teams with firm and office.
  2. RECAP/archive.org collection for this case — identifier gov.uscourts.txed.95285 (the Internet Archive mirror of the RECAP PDFs; the Markman opinion is ...95285.178.0.pdf). Pulling Dkts. 5–25 from that collection is the most direct route to the 2006 defense appearances.
  3. The Markman hearing transcript (cited in Doc. 178 as "Transcript at 154–155") — hearing transcripts in E.D. Tex. begin with an appearances-on-the-record recitation and would name every defense attorney who argued the '958/'867 terms, including any national counsel.

Caveats worth carrying into the write-up

  • Press sources conflate dockets. Several outlets (and the KIPO case summary noted in the earlier sections) describe the infringed patent as a "wireless local area network apparatus," which is the '867/'958 family, not the '730. Any counsel attribution pulled from those pieces should not be trusted without the docket.
  • The -CE suffix. Pretrial and the trial itself ran before Magistrate Judge Charles Everingham by consent/referral, so defense counsel's filings were captioned before him — the signature-block style in this case will match the Certicom forms quoted above.
  • No sealed-appearance issue. The record shows an actively litigated, publicly docketed case through a jury verdict, so there is no basis to invoke sealed filings as an excuse for the gaps above; they are search-access gaps, not confidentiality gaps.