Bishop Display Tech v. LG Electronics: Six-Patent Display Suit Dismissed With Prejudice
Bishop Display Tech, LLC asserted six patents covering TFT-LCD and power supply board technology against LG Electronics, LG Display, LG Electronics U.S.A., and New Optics in the Eastern District of Texas. After 396 days of litigation before Judge Rodney Gilstrap, all claims were dismissed with prejudice — with each side bearing its own costs.
Six-Patent TFT-LCD Campaign Against LG Ends With Prejudice in EDTX
Filed on 8 February 2024 in the Eastern District of Texas before Judge Rodney Gilstrap, this infringement action saw Bishop Display Tech, LLC assert six United States patents — US6822706B2, US7414682B2, US6819377B2, US7995047B2, US7583347B2, and US8093830B2 — against a cluster of LG-affiliated entities: LG Electronics, Inc., LG Display Co., Ltd., LG Electronics U.S.A., Inc., and New Optics, Ltd. The asserted patents span TFT-LCD panel technology and power supply board designs embedded in a broad range of consumer display products including televisions, monitors, laptops, tablets, and mobile phones.
The case closed on 10 March 2025 when the Court acknowledged and accepted a joint dismissal with prejudice. Critically, the parties agreed to bear their own costs and attorneys’ fees, meaning no monetary award was made in either direction and no fee-shifting motion under 35 U.S.C. § 285 was pursued or granted. A with-prejudice dismissal extinguishes Bishop Display Tech’s ability to re-assert these specific claims against the LG defendants in any future federal action.
The 396-day duration, combined with a mutual cost-bearing agreement, is consistent with a negotiated resolution — most likely a confidential settlement — reached before any substantive merits ruling. The public record does not disclose licensing terms, royalty amounts, or any cross-licensing arrangement. What remains unknown is whether Bishop Display Tech secured any commercial value from the litigation, or whether the defendants’ collective defence posture made continued pursuit commercially unattractive.
Filing to Dismissed with Prejudice in 396 days
396-day lifespan — faster than the EDTX median for multi-patent infringement actions
Dismissed with prejudice: what the final order means for both sides
Dismissal with prejudice closes the door permanently
A dismissal with prejudice under federal civil procedure operates as a final adjudication on the merits, barring the plaintiff from re-filing the same claims against the same parties in any future action. Unlike a without-prejudice dismissal — which preserves the right to refile — this outcome is terminal for these six patents as against the LG defendants. The mutual cost-bearing clause further suggests a negotiated resolution rather than a court-imposed outcome.
Claim preclusion appliesBishop Display Tech cannot re-assert these claims against LG
The with-prejudice dismissal permanently extinguishes Bishop Display Tech’s right to sue the LG defendants on these six patents for the accused products. If a confidential settlement was reached, the public record does not confirm it. The mutual cost clause prevents any fee recovery. Bishop Display Tech retains the underlying patents and may still assert them against other parties not named in this action — but the LG enforcement campaign is conclusively ended.
LG defendants releasedLG entities receive full release with no public admission
All four LG-affiliated defendants — LG Electronics, LG Display, LG Electronics U.S.A., and New Optics — are released from any liability under the six asserted patents for the accused display and power supply products. No validity finding was made, meaning the patents are not invalidated. Defendants bear their own legal costs, consistent with a mutual settlement rather than a court-ordered victory. The accused TFT-LCD and power supply board product lines face no injunctive risk from this action.
No invalidity rulingDisplay sector: patents survive but LG exposure is resolved
Because no invalidity or non-infringement ruling was issued, the six Bishop Display Tech patents remain technically enforceable against third parties. Competitors and suppliers using TFT-LCD panels or power supply board architectures similar to those accused here should note that this portfolio remains active. The case’s rapid resolution — under 13 months against a four-defendant group — may reflect the commercial leverage available when defendants mount a unified defence in EDTX against a patent assertion entity.
Patents remain enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Bishop Display Tech, LLC | Company | Display technology patent assertion entity — holder of US6822706B2 and five related display patentsSearch in Eureka ↗ |
| Defendant | LG Electronics, Inc. | Company | LG Electronics, LG Display, LG Electronics U.S.A., and New Optics — global manufacturers of TFT-LCD displays and consumer electronicsSearch in Eureka ↗ |
| Co-Defendant | LG Display Co., Ltd. | Company | Search in Eureka ↗ |
| Co-Defendant | New Optics, Ltd. | Company | Search in Eureka ↗ |
| Co-Defendant | Lg Electronics U.S.A., Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Janson Westmoreland | Attorney | Counsel for Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff counsel | John Paul Murphy | Attorney | Counsel for Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Jonathan Hart Rastegar | Attorney | Counsel for Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Justin Bryce Kimble | Attorney | Counsel for Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Patrick Joseph Conroy | Attorney | Counsel for Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Thomas William Kennedy , Jr. | Attorney | Counsel for Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Nelson Bumgardner Conroy PC | Law Firm | Representing Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Nelson Bumgardner Conroy PC (Dallas) | Law Firm | Representing Bishop Display Tech, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Nelson Bumgardner Conroy PC (Fort Worth) | Law Firm | Representing Bishop Display Tech, LLCSearch in Eureka ↗ |
| Defendant counsel | Melissa Richards Smith | Attorney | Counsel for LG Electronics, Inc.Search in Eureka ↗ |
| Defendant law firm | Gillam & Smith LLP | Law Firm | Representing LG Electronics, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The Court’s order is deliberately compact — it ‘acknowledges and accepts’ a party-agreed dismissal with prejudice, confirming this was a consent-based termination rather than a sua sponte or contested ruling. The with-prejudice designation carries full res judicata effect: Bishop Display Tech is claim-precluded from reasserting these six patents against these defendants. The mutual cost-bearing clause is commercially significant — it signals neither party extracted a fee-shifting concession, consistent with a balanced negotiated exit. No claim construction, validity, or infringement finding appears in the record.
US6822706B2 — TFT-LCD display and power supply board patent portfolio
The six asserted patents — US6822706B2, US7414682B2, US6819377B2, US7995047B2, US7583347B2, and US8093830B2 — span two technical pillars of modern flat panel display systems: thin-film transistor liquid crystal display (TFT-LCD) panel architecture and the power supply board circuitry that drives them. Filed between the early 2000s and 2009, these patents reflect foundational display engineering work that predates the mass-market proliferation of LCD televisions and portable devices. Their application numbers trace to development periods when TFT-LCD was displacing CRT technology at scale.
For display OEMs and their supply chains, this portfolio is strategically significant because TFT-LCD panels and power supply boards remain ubiquitous in televisions, monitors, laptops, tablets, and smartphones — exactly the product categories accused here. The patents’ age means they are unlikely to be early in their term, but practitioners should verify expiry dates before concluding they are expired. Because no invalidity ruling was issued, any party whose products rely on similar panel architectures or power supply designs faces residual assertion risk from this portfolio if Bishop Display Tech pursues further licensing campaigns.
Should you run an FTO against US6822706B2 and the Bishop Display Tech display portfolio?
Any company designing, manufacturing, importing, or selling display products incorporating TFT-LCD panels, liquid crystal modules, or associated power supply boards should assess this portfolio. The accused product set — TVs, monitors, laptops, tablets, and mobile phones — covers the core of the consumer electronics display market. If your products use TFT-LCD technology sourced from LGD, New Optics, or comparable panel manufacturers, the patent claims asserted here are directly relevant to your FTO scope.
PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map each of the six asserted patents against your specific product architecture, identify claim elements that may read on your designs, surface prior art that could support invalidity arguments, and monitor for continuation patents that may extend the portfolio’s reach. Given that these patents survived litigation without any invalidity ruling, a proactive FTO analysis is the commercially prudent step before product launch or supply chain expansion in the TFT-LCD and display power supply segment.
Run a freedom-to-operate analysis on US6822706B2 to assess your product’s exposure
Run FTO in Eureka →Similar TFT-LCD and display patent infringement cases in EDTX
Explore patent infringement actions asserting TFT-LCD, LCD module, and display power supply patents in the Eastern District of Texas before Judge Gilstrap.
What this case signals for the display technology IP landscape
A six-patent EDTX campaign against a major OEM and its supply chain resolved in under 13 months — here is what practitioners should take away.
Multi-defendant coordination can accelerate resolution against PAEs
By naming LG Electronics, LG Display, LG Electronics U.S.A., and New Optics together, Bishop Display Tech faced a unified defence team. The rapid with-prejudice dismissal — before any claim construction or merits ruling — suggests defendants’ collective posture made early resolution commercially rational. In-house teams facing PAE campaigns should assess whether coordinating with co-defendants compresses the litigation timeline.
TFT-LCD and power supply board patents remain active enforcement vectors
The six asserted patents cover foundational display technology still embedded in televisions, monitors, laptops, and mobile phones. Because no invalidity ruling was issued, these patents survive fully enforceable. Display manufacturers, ODMs, and component suppliers not named in this action should treat the Bishop Display Tech portfolio as an active risk and consider FTO analysis against their own power supply and LCD module architectures.
Bishop v LG — key questions answered
All claims in Case No. 2:24-cv-00085 were dismissed with prejudice on 10 March 2025, approximately 396 days after filing. The Eastern District of Texas court acknowledged a party-agreed dismissal with each side bearing its own costs and attorneys’ fees. No validity or infringement ruling was issued.
Bishop Display Tech asserted six patents: US6822706B2, US7414682B2, US6819377B2, US7995047B2, US7583347B2, and US8093830B2. These patents cover TFT-LCD display panel architecture and power supply board technology used in televisions, monitors, laptops, tablets, and mobile phones.
A dismissal with prejudice operates as a final adjudication on the merits under federal civil procedure. Bishop Display Tech is permanently barred from reasserting these six patents against LG Electronics, LG Display, LG Electronics U.S.A., and New Optics for the accused products. The underlying patents remain valid and could still be asserted against other parties.
The mutual cost-bearing clause — where neither party recovers attorneys’ fees — is consistent with a negotiated settlement rather than a court-ordered result. It suggests neither party extracted a fee-shifting concession under 35 U.S.C. § 285. The public record does not disclose whether any confidential licensing payment accompanied the dismissal.
Yes. Because the dismissal with prejudice released only the named LG defendants and no court issued an invalidity or non-infringement ruling, all six patents remain technically enforceable against third parties. Display manufacturers, ODMs, and retailers whose products incorporate TFT-LCD panels or power supply boards with similar architectures should consider FTO analysis against this portfolio.
PatSnap Eureka searches patents and litigation data to answer instantly.