Cedar Lane Technologies Inc. v. PixArt Imaging Inc.

I'll research this case before drafting the overview.

Key finding: the docket shows a voluntary dismissal 20 days after filing. Let me verify details and research the parties and patent.

Case Overview & Background

The parties. Plaintiff Cedar Lane Technologies Inc. is a Canadian entity incorporated in 2019 with a principal place of business in Nelson, British Columbia — a textbook non-practicing entity (NPE/PAE) that does not make or sell anything and instead monetizes a large acquired patent portfolio, much of it sourced from Intellectual Ventures. It is among the most prolific patent filers in the United States; reporting puts its docket at roughly 325+ district court suits (Lex Machina-derived figures cited by the Shenzhen IP Protection Center in an October 2022 risk alert), and it was the single most active patent plaintiff nationally in 2021. In a March 2023 IAM interview, Cedar Lane president Greg Benoit described a 96% settlement rate among terminated cases and a strong preference for W.D. Tex. (IAM; JD Supra/Seyfarth "NPE Showcase"). Its near-exclusive counsel is Isaac Rabicoff of Rabicoff Law LLC. Defendant PixArt Imaging Inc. (TPEX: 3227) is an operating semiconductor company founded in July 1998 and headquartered in Hsinchu Science Park, Taiwan. It designs CMOS image sensors (CIS), capacitive touch controllers, and custom ASICs, and describes itself as the world's leading supplier of optical mouse sensor chips and an industry leader in "Smart Sensor" SoCs; its wafer partners include UMC, TSMC, and GlobalFoundries (PixArt company profile). PixArt is thus a genuine technology developer and a foreign manufacturer with no U.S. manufacturing footprint — the archetypal target profile for this kind of campaign.

The patent and accused technology. The sole patent-in-suit is U.S. Patent No. 6,473,527, "Module and method for interfacing analog/digital converting means and JPEG compression means" — inventor Chia-Ying Wang, originally assigned to Mustek Systems Inc. (Taiwan), filed June 1, 1999, issued October 28, 2002, and expired on/around May 31, 2019 (Google Patents; Unified Patents portal). Technically, the '527 patent claims an interface module sitting between an A/D converter and a JPEG encoder that uses a small buffer sized to hold a "predetermined number of image lines" (e.g., 8 lines) and then hands off compression-unit-sized blocks (8×8 pixel) directly to the JPEG device's built-in memory — eliminating a discrete external RAM used for rate-control buffering. Claim 1 is drafted in means-plus-function form ("read control means," "memory means," "output control means"), making construction of the corresponding structure the central infringement battleground. Because the patent expired in 2019, any recovery is capped by the six-year lookback of 35 U.S.C. § 286 to roughly the October 2016–May 2019 window, a point the Shenzhen alert expressly flagged. Notably, the complaint (Doc. 1, filed 10/12/2022) did not name accused products in its body; it incorporated by reference claim-chart exhibits, and in Cedar Lane's parallel complaints those exhibits were not publicly filed, so the specific PixArt part numbers accused are not publicly documented. Given that PixArt primarily sells raw image sensors that stream data to a host SoC rather than an A/D-plus-JPEG-encoder pipeline, the theory of infringement against a sensor vendor is not self-evident — but no court ever tested it here.

Posture, venue, and why it matters. Filed October 12, 2022 in the Waco Division of the W.D. Tex. as No. 6:22-cv-01077, the case was assigned to Judge Alan D. Albright — the docket entry states assignment was made "due to related cases" rather than through the division's general pool, which is significant because the district had moved (effective late July 2022, per court announcement) to randomized assignment of new Waco patent cases, a change driven by the well-known concentration of patent filings in Albright's courtroom. The case had no substantive life: summons issued October 13, and Cedar Lane filed a Notice of Voluntary Dismissal on November 1, 2022 (Doc. 8), with the AO-120 report sent to the USPTO the same day (Doc. 9) — roughly 20 days from filing, with no answer, no motion, no claim construction, and no transfer ruling (Patexia docket). The docket does not disclose the reason; Cedar Lane's documented pattern of filing and quickly dismissing after a modest payment makes a pre-suit or early license the most likely explanation, but that is inference, not record fact. The case is notable in three respects: (1) it is one of the hundreds of essentially identical '527 complaints Cedar Lane filed in 2022 against camera, scanner, and imaging-module makers — IPWatchdog's October/November 2022 filings roundup tagged this wave as Cedar Lane "IV selloff" litigation, and contemporaneous reporting counts 38 complaints on the '527 patent alone; (2) it illustrates the "expired patent" enforcement model, where an NPE asserts a lapsed 1999-vintage patent for pre-expiration damages against deep-pocketed hardware makers, converting litigation cost asymmetry into settlement value; and (3) it is a data point in the Waco/Albright venue story and in the professional-conduct saga surrounding Rabicoff, whom Judge Vince Chhabria sanctioned $1,000 in Cedar Lane v. Blackmagic Design (N.D. Cal. No. 3:20-cv-01302-VC, Nov. 19, 2020) and referred to that district's standing committee (which resolved the matter informally in part via payment of $9,193 in unpaid pro hac vice fees) (sanctions order and committee report).

Sourcing caveats. Party identities, filing and dismissal dates, judge assignment, and the patent's identity and expiration are well sourced (PACER-derived docket via Patexia; Google Patents/Unified Patents; NPE Litigation Database at Stanford, which classifies Cedar Lane as a "Non Practicing Entity" asserting "Acquired patents"). Less well sourced: the specific accused PixArt products (not publicly identified), the existence and amount of any settlement (not on the docket), and the precise damages theory. I also found no evidence of any IPR, PGR, or CBM petition against the '527 patent in my searches — but absence of a hit is not proof of absence, and no IPR could realistically have been completed within this case's 20-day life. The exact effective date of the W.D. Tex. random-assignment change (late July 2022) should be verified against the district's standing orders before being relied on in a filing.

I'll research the docket events and any parallel proceedings before drafting.

Key Legal Developments & Outcome — Cedar Lane Techs. v. PixArt Imaging, No. 6:22-cv-01077 (W.D. Tex.)

Bottom line up front: this case generated no substantive legal developments at all. There is no answer, no counterclaim, no motion of any kind, no scheduling order, no Markman proceeding, no discovery, no trial, and no appeal. The entire litigation consisted of nine docket entries spanning 2022-10-12 to 2022-11-01 (20 days), ending in a plaintiff's unilateral notice of dismissal before PixArt ever appeared. Accordingly, nothing in this case has precedential or even persuasive value on the '527 patent.

Chronology (all entries from the PACER-derived docket)

(Patexia docket, Cedar Lane v. PixArt Imaging, No. 6:22-cv-01077; Stanford NPE Litigation Database, case 268845)

Initial pleadings — what was and was not filed

• No answer, no Rule 12 motion, no counterclaim for declaratory judgment of invalidity or non-infringement. PixArt never made an appearance in the case as reflected on the public docket. There is likewise no waiver of service, no return of service, and no notice of appearance by PixArt counsel anywhere in the reported entries — consistent with a pre-service (or immediately post-service) exit, which is the cleanest procedural path to a Rule 41(a)(1)(A)(i) dismissal as of right.
• PixArt's only involvement in the public record is as the named defendant and addressee of the summons. It therefore obtained no merits adjudication, no estoppel, and no fee award, but also no judicial declaration of non-infringement or invalidity — a meaningful difference from, e.g., the parallel Cedar Lane matter against Logipix Ltd. (E.D. Va. No. 1:22-cv-00713), where the defendant actually answered, counterclaimed, and negotiated a dismissal with prejudice of plaintiff's claims (with its own counterclaims dismissed without prejudice, each side bearing its own fees/costs) on 2022-07-14 (Patexia docket, Logipix).

Pre-trial motions of substance

None. No motion to dismiss under § 101 or § 112, no motion to transfer venue under 28 U.S.C. § 1404(a), no motion to stay pending IPR, no motion for summary judgment, no motion for a more definite statement, and no Rule 12(b)(5)/12(b)(3) challenge. The 20-day life of the case foreclosed any of these — the answer deadline alone had not run, and PixArt (a Taiwan-domiciled defendant) would have had 90 days to respond under Rule 12(a)(1)(A)(ii) had it been served.

Structural point worth flagging: because the case died pre-answer, the two issues the case was most "worth" litigating were never tested — (i) whether a means-plus-function claim ("read control means," "memory means," "output control means") could be mapped onto a sensor vendor's products at all, and (ii) whether W.D. Tex. was a proper venue under TC Heartland / § 1400(b) for a Taiwanese company with no U.S. manufacturing or regular place of business. There is no ruling on either.

Claim construction (Markman)

The case never reached claim construction. No scheduling order issued, no preliminary infringement or invalidity contentions were due or served, no O2 Micro / Local Rule P.R. 4-1 through 4-6 exchange occurred, no Markman briefing or hearing, and no claim construction order. The '527 patent's disputed terms therefore remain unconstructed by any court in this litigation — no construction of the three means-plus-function limitations, and no corresponding-structure identification under 35 U.S.C. § 112(f) ever entered the record here.

Discovery

No discovery of any kind — no Rule 26(f) conference, no initial disclosures, no interrogatories, no Rule 30 depositions, no Rule 34 requests, no third-party subpoenas. Consequently there is no public record of the accused part numbers, PixArt's revenue attributable to any accused product, or the damages computation that would have driven the § 286 six-year lookback (roughly 2016-10 to 2019-05, the patent having expired on or about 2019-05-31).

Trial, verdict, post-trial motions

None. No trial setting, no pretrial order, no verdict, no JMOL or new-trial motion under Rules 50/59, no § 285 exceptional-case motion, no bill of costs, and no attorney's-fee motion. Because dismissal came under Rule 41(a)(1)(A)(i) rather than by judgment, PixArt had no prevailing-party hook for fees, and Cedar Lane faced no cost exposure absent a refiling against PixArt (Rule 41(d)).

Final disposition and present posture

• Terminated 2022-11-01 by Cedar Lane's notice of voluntary dismissal (Doc. 8), with the AO-120 termination report to the USPTO entered the same day (Doc. 9). The case is closed; as of today (2026-11-08) there is no pending motion, no reopened docket, and no appeal.
• Prejudice status — a genuine gap in the public record. The docket description of Doc. 8 reads simply "NOTICE of Voluntary Dismissal… (Attachments: # 1 Proposed Order)" and does not state "with prejudice." Under Rule 41(a)(1)(A)(i), a dismissal by notice before the defendant serves an answer or summary-judgment motion is without prejudice by operation of law unless the notice says otherwise. So the default legal conclusion is that the dismissal was without prejudice — but I could not verify the text of Doc. 8, and Cedar Lane's practice in this wave was inconsistent (the parallel STMicroelectronics notice, No. 6:22-cv-01120, expressly dismissed with prejudice). Flag: treat "without prejudice" as the rule-based inference, not as a verified record fact. The attachment of a proposed order is also slightly anomalous for a Rule 41(a)(1)(A)(i) dismissal, which needs no order; it is common practice in Rabicoff-filed notices but does not change the self-executing character of the notice.
• No settlement document, license, or consideration is on the docket. Any payment is inference only. Independent third-party data on the campaign supports the inference: the Korea IP Protection Agency's risk analysis recorded that of the 179 Cedar Lane suits filed through mid-2022 on the '527/'790/'242 trio, 134 were terminated by voluntary dismissal ("소취하"), and its case table records several 2022 '527 suits as "합의종결" (terminated by agreement) within weeks to months of filing (e.g., 6:22-cv-00456 filed 2022-05-05 and closed 2022-07-08) (KIPO/IP Protection Agency risk report table).
• Refiling remains legally possible but economically hollow. Even if Doc. 8 was without prejudice, the '527 patent expired in May 2019 and § 286 caps recovery to the six years before filing; every day that passes shrinks nothing on the back end (the window closed at expiration) but the remaining exposure is fixed to roughly 2016-10 through 2019-05. There is no public indication Cedar Lane ever refiled against PixArt.

Parallel PTAB proceedings

• No IPR, PGR, or CBM petition against U.S. Patent No. 6,473,527 was identified in searching PTAB dockets and the Unified Patents portal. Absence of a hit is not proof of absence, but two points make an IPR practically irrelevant here: (i) the case was dismissed 20 days after filing, long before any petition could be drafted, filed, and instituted (the § 315(b) one-year bar would not even have started absent service); and (ii) the patent expired in 2019, which removes the amendment incentives that normally drive IPR strategy and leaves only the damages tail at stake.
• For completeness: a Unified Patents IPR involving Cedar Lane does exist in the broader portfolio — IPR2020-00006, Unified Patents, LLC v. Cedar Lane Technologies Inc., filed 2019-10-03, which appears in the "related cases" list for Cedar Lane's W.D. Tex. Disney suit (No. 6:20-cv-00949). I could not verify which patent that petition targeted; on the available record it does not appear to be the '527

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

Let me pull the full docket from additional sources to confirm whether any other attorneys appeared.

Now let me verify Rabicoff's bar admissions status in W.D. Tex. and firm details as of 2022, plus check the complaint signature block.

Counsel of Record for Plaintiff Cedar Lane Technologies Inc.

Bottom line

The docket for No. 6:22-cv-01077 discloses exactly one attorney of record for Cedar Lane: Isaac Phillip Rabicoff of Rabicoff Law LLC. There is no local counsel of record, no co-counsel, and no second appearance of any kind on the plaintiff's side. Every plaintiff-side filing in the case — the complaint, the Rule 7.1 disclosure, the summons request, the AO-120 form, the notice of related case, the appearance, and the notice of voluntary dismissal — was signed by Rabicoff alone. Because the case died in 20 days, no pro hac vice motion, no admission order, and no substitution or addition of counsel ever appears on the docket.

Sourcing for the appearances

• Doc. 2, Notice of Attorney Appearance by Isaac Rabicoff on behalf of Cedar Lane Technologies Inc. (entered 10/12/2022) — the operative appearance; Doc. 1 (Complaint) and Doc. 3–6 are all attributed to "(Rabicoff, Isaac)" in the docket text (Patexia docket for 6:22-cv-01077).
• Doc. 8, Notice of Voluntary Dismissal (11/01/2022), also signed "(Rabicoff, Isaac)" — confirming he remained sole counsel through termination.
• The 9-entry docket contains no defense appearance, no answer, no motion, and no pro hac vice application by anyone. PixArt Imaging Inc. never appeared; there is therefore no PixArt counsel of record to report.
• Firm bio and admissions list: rabilaw.com. USPTO Reg. No. 74,147 confirmed in his PTAB filings (e.g., IPR2020-00111 Patent Owner mandatory notices).

Two flags worth carrying forward

1. No local counsel in W.D. Tex., and no admission filing in this case. This is a genuine anomaly rather than a data gap: Rabicoff's own published admissions list does not include the Western District of Texas, yet he filed no pro hac vice motion in this case (or, apparently, in the dozens of parallel Cedar Lane W.D. Tex. suits in this wave) and instead checked the "I am admitted or otherwise authorized to practice in this court" box on W.D. Tex. civil cover/appearance forms in this period. Given that Judge Chhabria's 2020 referral was premised on precisely this pattern — filing and settling before his lack of admission was detected — the absence of any W.D. Tex. admission paper in a 20-day case should be characterized carefully. I could not retrieve the signature block of Doc. 1 or the text of Doc. 2 in this case specifically, so I cannot state what address or bar authorization he represented; the address information above comes from his filings in other W.D. Tex. matters and his firm website, not from this docket.

2. Firm address is date-sensitive. Rabicoff Law LLC's listed address changed over the campaign (Chicago, IL → Alexandria, VA → Harrison, NY → Chicago, IL again). Any citation to the firm's "office location" for an October 2022 filing should be verified against the Doc. 1/Doc. 2 signature blocks on PACER rather than against the current website. His phone number (773) 669-4590 and email isaac@rabilaw.com have been stable across filings.

What I did not find: no appearance by any Texas firm as local counsel; no appearance by Cedar Lane in-house personnel (Cedar Lane has no in-house litigation counsel of record in any of its cases that I located — Greg Benoit is identified in press reporting as president, not as counsel); and no pro hac vice order. If a reader needs the sealed/unfiled detail — e.g., whether a demand letter or standstill agreement preceded dismissal — that is not on this docket and I found no public source for it.

I'll research the docket and any appearances by PixArt's counsel.

The docket listing shows only plaintiff-side filings. Let me confirm via CourtListener/RECAP and check whether any defense appearance exists.

The Patexia docket shows only 9 entries, all plaintiff-side or clerk-generated. Let me cross-check with another docket aggregator to confirm no defense appearance.

Counsel of Record — Defendant PixArt Imaging Inc.

Bottom line: no attorney ever appeared for PixArt in this case. The docket for No. 6:22-cv-01077 contains nine entries, the last of which is the plaintiff's notice of dismissal, and every substantive filing was made by Cedar Lane's counsel or generated by the clerk. There is no notice of appearance, no Rule 7.1 corporate disclosure, no answer or Rule 12 motion, no extension stipulation, no pro hac vice application, and no local-counsel designation on the docket for the defense side (Patexia docket, Case No. 6:22-cv-01077).

Complete docket of appearances and filings

The only attorney of record in the entire case is plaintiff's counsel, Isaac Rabicoff of Rabicoff Law LLC. No defendant-side name appears anywhere in the record.

Why there is no defense counsel to identify

Three record facts explain the absence:

1. The case died before any responsive deadline. Filed October 12, 2022, summons issued October 13, and Cedar Lane noticed voluntary dismissal on November 1, 2022 — 20 days after filing (Doc. 8). Under Fed. R. Civ. P. 12(a)(1)(A)(i), PixArt's answer was not yet due when the case was dismissed.
2. No proof of service appears on the docket. Doc. 7 is the summons issued to PixArt; there is no executed return of service, waiver of service, or affidavit of service anywhere in the nine-entry docket. That is consistent with dismissal occurring before (or at the very outset of) formal service — meaning PixArt may never have been obligated to retain U.S. counsel at all. This is an inference from the docket, not a documented fact; the docket itself does not state whether or why service was incomplete.
3. No Rule 7.1 statement or corporate-disclosure filing exists for PixArt, which a foreign parent/subsidiary would ordinarily file with its first appearance.

This contrasts sharply with Cedar Lane's contemporaneous cases in which defendants did engage counsel and litigate — e.g., Cedar Lane v. Logipix Ltd. (E.D. Va. No. 1:22-cv-00713), where Logipix appeared through Michael J. Ballanco with Neil J. McNamara and Lance E. Wyatt Jr. admitted pro hac vice, answered, counterclaimed, and obtained a with-prejudice dismissal (Docs. 7–16). The absence of any analogous activity here is a genuine feature of this docket, not a gap in the reporting.

Context on PixArt's known outside counsel (not counsel of record here)

Because the task asks for counsel "when known," the following is offered strictly as background on PixArt's historical U.S. representation in other matters — none of these firms has any documented connection to No. 6:22-cv-01077, and none should be listed as counsel in this case:

• Keker & Van Nest LLP (San Francisco) — Daralyn J. Durie, Leo L. Lam, and Eugene M. Paige represented PixArt as plaintiff/counterclaim-defendant in PixArt Imaging Inc. v. Agilent Technologies, Inc., N.D. Cal. No. C 03-4871 JW (Agilent's '780, '720, '804, and '094 optical-mouse patents), a multi-year sensor-patent case that produced substantial claim-construction and stipulation practice (ECF No. 118; ECF No. 148).
• LeClairRyan LLP (San Francisco) — Duane H. Mathiowetz as lead counsel for PixArt as petitioner in PixArt Imaging, Inc. v. SyncPoint Imaging, LLC, IPR2015-01347 (U.S. Patent No. 6,275,214) (petitioner's exhibit list). LeClairRyan dissolved in 2019, so this is historical only.
• In SyncPoint Imaging, LLC v. [Nintendo of America, Inc.](/litigations/by-defendant/Nintendo%20of%20America%2C%20Inc.), E.D. Tex. No. 2:15-cv-247, PixArt was a co-defendant and used Texas patent counsel; the docket materials I found do not cleanly identify its individual counsel of record, so I am not naming any.

I found no source identifying any firm retained by PixArt in response to the October 2022 Cedar Lane wave, and no reporting that PixArt engaged Rabicoff's counterpart or negotiated a standstill.

Sourcing caveats and recommended verification

• The negative finding rests on the aggregator docket (Patexia, sourced from PACER, which returned a complete nine-entry listing) corroborated by the absence of any defense filing in search results across Justia, UniCourt, Docket Alarm, and CourtListener/Stanford NPE database. I did not obtain a live PACER docket sheet or a CourtListener RECAP docket page for this case number, so if a document were sealed or filed under a restricted party, an aggregated list could omit it.
• Recommended verification: pull the PACER docket report (Dkt. 1–9) for 6:22-cv-01077 directly from the W.D. Tex. CM/ECF system, and check the "Attorneys" tab in PACER's docket report, which lists every attorney who has entered an appearance regardless of whether a document reflects it. Because the case is closed and dismissed, the docket is final and will not change.
• Do not attribute the Keker & Van Nest or LeClairRyan names to this case in any filing or report; they are documented in other PixArt matters only, and the 20-year gap between the Agilent case and this 2022 suit makes any assumption of continuity unreliable.

One flag on the prior section: the overview states Cedar Lane "filed a Notice of Voluntary Dismissal on November 1, 2022 (Doc. 8)" and describes "no answer, no motion, no claim construction, and no transfer ruling." That is confirmed by the docket and is consistent with the finding here. The overview does not mention the apparent absence of any proof of service, which is a useful additional data point supporting the "dismissed before appearance" characterization.