Proxense, LLC v. Target Corporation

I'll research this case before drafting. Let me start with broad searches on the parties, the docket, and Proxense's patent campaign.

Let me dig into the Target complaint specifics and the case's termination.

Now let me find the actual asserted patents in the Target case and the stay/closure history.

Case Overview

Parties. Proxense, LLC is a Delaware LLC headquartered in Bend, Oregon, founded in 2001 and formally incorporated in 2005. From roughly 2004–2012 it actually built products — mobile-payment and "personal digital key" (PDK) technology, biometric capture and secure-element authentication, and proximity/beacon infrastructure — employing over thirty engineers (Proxense's own account, reproduced in its later complaints, e.g., Proxense v. Hyundai/Kia, No. 6:25-cv-00016 (W.D. Tex.), ¶¶ 32–35, https://ipfray.com/wp-content/uploads/2025/01/25-01-14-Proxense-v.-Hyundai-KIA-Genesis-complaint.pdf). It no longer commercializes products and is characterized in the trade press as a non-practicing entity running a licensing program of roughly 90 patents, led by founder/CEO John Giobbi (ip fray, https://ipfray.com/proxense-sues-mastercard-over-biometrics-patents-expands-lg-enforcement-campaign/). Target Corporation is the national big-box retailer — here a customer-facing defendant accused of infringing through its in-store/mobile retail technology rather than through manufacturing.

The accused technology. This case belongs to Proxense's first enforcement wave: the June 2019–2020 campaign against brick-and-mortar retailers — CVS, J.C. Penney, Macy's, Nordstrom, Walmart, Urban Outfitters and Target — over "beacon systems and related apps," i.e., Bluetooth/low-energy in-store beacons and the location- and proximity-triggered features of the retailers' mobile apps (Robins Kaplan, "Proxense Targets LG Pay, Digital Keys, And Wi-Fi Connectivity," Mondaq, https://www.mondaq.com/unitedstates/patent/[1495144](/patent/1495144); same firm's "Proxense Hits Intel, Ups Number Of Patents-in-Suit," https://www.mondaq.com/unitedstates/patent/[1493770](/patent/1493770)). Target was the last of those retailer suits to remain active and, per that reporting, "closed in May 2022." I was unable to retrieve the Target complaint or its infringement contentions from a public mirror, so the precise accused instrumentalities (which app versions, which beacon hardware) are not verified here.

Patents asserted — a sourcing caveat. The case metadata lists U.S. Patent No. 6,973,576, and I treat that as authoritative per your instruction. The '576 patent, titled "Digital content security system," issued December 6, 2005 from Application No. 10/715,035 (filed Nov. 17, 2003), and claims a Personal Digital Key (PDK) paired with a receiver/decoder circuit (RDC) that gates access to a computer and its stored digital content at drive-level, sector-level and file-level — the parent of, e.g., U.S. Patent No. 7,404,088 (see the '088 specification's priority statement, https://www.freepatentsonline.com/7404088.html). One-line sketch: a wireless key fob/PDK plus a reader circuit that unlocks protected storage and content only when the key is present and authenticated. Two honest flags: (1) I could not corroborate the '576 patent's assertion against Target in any docket-based source, and (2) secondary reporting describes the retailer wave as beacon/app litigation, which fits Proxense's wireless-scheduling and proximity families better than the '576's content-security claims. The prior section of this summary likewise recorded no asserted patents for this case. Treat the '576 identification as metadata-derived and unconfirmed pending the Dkt. 1 complaint and infringement contentions.

Procedural Posture and Venue

Proxense filed on September 28, 2020 in the W.D. Tex., Waco Division, before Judge Alan D. Albright, as No. 6:20-cv-00879 (Docket Alarm, http://ocr.docketalarm.com/cases/Texas_Western_District_Court/6--20-cv-00879/Proxense_LLC_v._Target_Corporation/; Justia, https://dockets.justia.com/docket/texas/txwdce/6:2020cv00879/[1109315](/patent/1109315)). Target was served October 9, 2020 (Dkt. 7); local counsel Gilbert Andrew Greene appeared October 15, 2020 (Dkt. 8), with Matthew S. Yungwirth and Christopher J. Tyson admitted pro hac vice (Dkts. 9–10, granted Oct. 16, 2020); Target's response deadline was extended to November 30, 2020 (Dkt. 11, granted Oct. 22, 2020 — the docket's "11/30/2022" reset entry is a clerical error). Proxense was represented by Charles L. Ainsworth and Robert Christopher Bunt. The docket carries the flags CLOSED, PATENT, STAYED and records termination on May 11, 2022 — consistent with a stay followed by dismissal, though the stay and closure papers are not publicly mirrored, so whether the case ended in settlement or dismissal is unconfirmed.

Venue is the real story. Target was the case in which Proxense abandoned the Northern District of Illinois and moved its campaign to Waco; every subsequent Proxense suit — Samsung (6:21-cv-00210), Google (6:23-cv-00320), Microsoft (6:23-cv-00319), Apple (6:24-cv-00143), Intel (6:24-cv-00283), LG — was filed in Judge Albright's court. Albright's accumulated familiarity with the Proxense portfolio became doctrinally load-bearing: he relied on it to deny Google's § 1404(a) transfer motion, and the Federal Circuit declined mandamus in April 2024, holding he "reasonably found that judicial economy considerations disfavor transfer in light of the trial court's familiarity with the patents and technology from its substantial involvement with prior litigation" (quoted in Mondaq, https://www.mondaq.com/unitedstates/patent/1495144).

Why It Matters

Three reasons. First, it closed out the retail-beacon phase of the campaign and marked the pivot to a far more consequential Big Tech program: Proxense ultimately settled with Samsung (2023), Google (January 2025) and Intel (March 2026), while its Apple and Microsoft cases remain stayed, its LG case is pending, and it opened new fronts against Cisco (E.D. Tex., July 2026) and Mastercard (S.D.N.Y., October 2026) over MDES tokenization. Second, it is the origin point for the Waco consolidation that later made Proxense a test case for NPE forum-shopping and for the Federal Circuit's tolerance of Judge Albright's "familiarity" rationale. Third, it seeded the PTAB/reexam layer of the dispute: Samsung's IPR2021-01444 was denied institution on February 28, 2022 after Proxense's "third-party trusted authority" construction prevailed, and the later Google (IPR2024-00232), Microsoft (IPR2024-00775, -00846, -01326), Apple (IPR2024-01333, -01486) and Intel (IPR2025-00327/328/329) petitions produced adverse judgments, cancellations of all '730 claims, and Director-level discretionary denials — though none of that PTAB activity is tied to the '576 patent or directly to this Target docket.

Verification notes. Grounded: filing date, division, judge, case number, counsel appearances, service, answer extension, closed/stayed status and May 11, 2022 termination (Justia/Docket Alarm dockets); Proxense's corporate history, NPE status, campaign roster and settlement timeline (ip fray, Mondaq, and Proxense's own complaints); the '576 patent's title, issue date, specification and claim scope (USPTO/FreePatentsOnline). Not grounded: the Target complaint's actual asserted patent(s) and accused products, the reason for the stay or the terms of closure, and Target's litigation position or any motion practice after November 2020 — none of which I could confirm from PACER, an opinion, or a reliable secondary source. Those gaps should be filled from Dkts. 1, 12 onward via PACER before this section is treated as final.

I'll research this case systematically, starting with the core docket and then branching to related proceedings.

Let me pull the full docket from CourtListener and confirm which patents were asserted.

Let me retrieve the full docket text and confirm the asserted patents.

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

Counsel of Record for Plaintiff Proxense, LLC — Proxense, LLC v. Target Corp., No. 6:20-cv-00879-ADA (W.D. Tex.)

Bottom line

Two attorneys appear for Plaintiff Proxense, LLC on the docket, both from the same Tyler, Texas patent boutique:

No in-house counsel for Proxense and no pro hac vice admissions for plaintiff appear on the publicly available docket. The only pro hac vice motions in the case were filed by Defendant Target (Dkts. 9–10, for Matthew S. Yungwirth and Christopher J. Tyson), granted Oct. 16, 2020; Target's noticing attorney was Gilbert Andrew Greene (Dkt. 8).

Docket support

• Complaint filed Sept. 28, 2020, Waco Division, assigned to Judge Alan D. Albright (Dkt. 1); Rule 7 disclosure statement filed by R.C. Bunt (Dkt. 3); Report on Patent/Trademark (AO 120) also filed by plaintiff's counsel.
• Summons request filed by Bunt (Dkt. 5); summons issued Oct. 8, 2020 (Dkt. 6); service return filed by Bunt Oct. 12, 2020 (Dkt. 7 — Target served Oct. 9, 2020).
• Party/attorney records for the case (Justia Docket No. 1109315; UniCourt; Docket Alarm OCR docket) list plaintiff's attorneys as Charles L. Ainsworth and Robert Christopher Bunt.
• Case flags: CLOSED, PATENT, STAYED; terminated May 11, 2022.

Sources: https://dockets.justia.com/docket/texas/txwdce/6:2020cv00879/1109315; https://unicourt.com/case/pc-db5-proxense-llc-v-target-corporation-[688917](/patent/688917); http://ocr.docketalarm.com/cases/Texas_Western_District_Court/6--20-cv-00879/Proxense_LLC_v._Target_Corporation/; firm/litigation appearances as reflected in the Corrigent v. Cisco docket sheet (https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1553917](/patent/1553917)/download-documents?artifactId=a1NWMlk31_iiL5jgYjB0CaOR6hU1W4BiBFu0X_srLlftWX-LZ62EedI) and UNM Rainforest v. Toyota signature block (https://www.bloomberglaw.com/public/document/UNMRainforestInnovationsvToyotaMotorNorthAmericaIncetalDocketNo22).

Caveats and sourcing gaps

1. Full PACER docket not directly retrieved. The dockets I could access (Justia, UniCourt, Docket Alarm OCR) are complete only through roughly late November 2020. Because the case ran until May 11, 2022 and carries a "STAYED" flag, it is possible that additional plaintiff-side appearances (e.g., a later pro hac vice admission or a co-counsel notice from Proxense's later national counsel) occurred after that date and are not reflected in these free sources. No such appearance was found in any search.
2. No "Lead Counsel" designation found. W.D. Tex. practice frequently includes a notice designating lead counsel; no such entry appeared in the accessible docket for this case, so the "lead vs. of counsel" labels above are inferred from filing conduct (Bunt filed the case-opening documents; Ainsworth is the firm's senior named partner and is listed as "Lead Counsel" on later Proxense pleadings filed by successor counsel). Treat the lead/of-counsel split as inferred, not docket-confirmed.
3. Successor counsel did not represent Proxense here (as far as the record shows). In Proxense's later campaign (2023 onward), the company was represented by Hecht Partners LLP (David L. Hecht, Maxim Price, Yi Wen Wu), with Susman Godfrey appearing in some matters (Brian D. Melton, Lear Jiang), per ip fray's Jan. 2025 reporting on the Google dismissal and the Proxense v. Apple/v. Google/v. Microsoft dockets (https://ipfray.com/google-follows-samsung-in-settling-patent-dispute-with-biometrics-firm-proxense-in-western-district-of-texas-apple-microsoft-intel-lg-cases-still-pending/). I found no evidence those firms or attorneys appeared in the 2020 Target case, which was stayed and closed in May 2022 — before that counsel lineup is documented.
4. Michael W. Shore / Alfonso G. Chan (Shore Chan) should not be attributed to this case. A Dec. 29, 2020 IPR certificate of service lists them, together with Ainsworth and Bunt, as "attorneys of record for Plaintiff in the related litigation matter" in IPR2021-00375 (U.S. Pat. 8,265,096). That certification does not identify the Target action, and the '096 patent is not among the patents asserted in this case; I could not confirm a Shore Chan appearance in 6:20-cv-00879.
5. Case-metadata discrepancy worth flagging: the prompt lists U.S. Pat. 6,973,576 as the patent at issue, while the existing case summary states the case does not assert that patent. I could not resolve this from the accessible docket (the complaint itself, Dkt. 1, was not retrieved in full text). This should be verified against Dkt. 1 before the patent list is finalized; nothing in the record reviewed here identifies a specific asserted patent for this action.
6. Reason for termination not established. The case closed May 11, 2022 with a "STAYED" flag, but I did not locate the order or stipulation of dismissal; I am not asserting a settlement, license, or IPR stay as fact.

I'll research the docket and counsel appearances for this case. Note upfront: there's an internal tension I need to resolve — the case metadata lists US 6,973,576 as the patent at issue, while the prior summary says this case asserts no patents and does not involve the '576 patent. Let me check the docket.

Initial docket confirms three defense attorneys. Now let me pin down their firms, roles, and the asserted patent (which conflicts with the prior summary).

All three defense attorneys are Duane Morris. Now let me verify the asserted patent (metadata conflict) and check for later appearances/changes over the case's ~20-month life.

Counsel of record for Target Corporation

All three defense-side attorneys of record in this case come from a single firm — Duane Morris LLP — which staffed it as a national trial team (Atlanta + D.C.) with a Texas-barred partner as the Rule 83/local sponsor rather than retaining a separate local firm. That is consistent with Duane Morris being Target's standing patent defense counsel in this campaign (the same three lawyers also represented Target in Dyfan, LLC v. Target Corp., No. 6:19-cv-00179-ADA (W.D. Tex.)).

No in-house Target counsel (e.g., a Target legal-department attorney) appears on the docket snapshots I could retrieve.

Sourcing and limits of what I could verify

• Appearance facts are grounded in the docket entries reproduced on Justia and UniCourt (Dkts. 8, 9, 10, 11, and the Oct. 16, 2020 text orders granting PHV admission to Yungwirth and Tyson): Justia docket 6:20-cv-00879; UniCourt.
• Firm/office/bio facts: Duane Morris – Greene; Duane Morris – Yungwirth; Legal 500 – Tyson.
• Sealing / completeness caveat: the free docket mirrors I reached were last pulled October 22, 2020, while the case remained open until termination on May 11, 2022 (flagged "STAYED" on Docket Alarm: docketalarm OCR). I therefore cannot exclude additional appearances, withdrawals, or substitutions between late 2020 and mid-2022, nor confirm whether any filing was sealed. My tool budget was exhausted before I could pull the full post-2020 docket from PACER/CourtListener RECAP. The three names above are the appearances I can affirmatively source; anyone else would be speculation and I have not listed them.

Contradiction to flag (unresolved)

The case metadata lists US 6,973,576 as the patent at issue, but the previously generated narrative states this case "does not assert US 6973576 and lists no asserted patents." I attempted to resolve this against the complaint docket and the earlier N.D. Ill. retail campaign (Proxense sued CVS, J.C. Penney, Macy's, Nordstrom, Target, Walmart, and Urban Outfitters beginning June 2019 over beacon/PBX technology, per Mondaq), but my searches were cut off before I could confirm the asserted patent from the complaint itself. Treat the asserted-patent identification as open — the prior summary's "no patents asserted" statement looks like an error for a § 271 patent case with a jury demand on both sides, but I have not verified which patent(s) the complaint pleaded.