Querytron LLC v. Etsy, Inc. — Search Patent Suit Voluntarily Dismissed in 131 Days
Querytron LLC asserted US10534820B2, covering enhanced buyer-oriented search results, against e-commerce marketplace Etsy in the Southern District of New York. The case ended by voluntary dismissal — claims against Etsy with prejudice, counterclaims against Querytron without prejudice — with each party bearing its own costs across a 131-day span.
Search-Tech Patent Assertion Against Etsy Ends Without a Merits Ruling
On June 5, 2025, Querytron LLC filed suit against Etsy, Inc. in the United States District Court for the Southern District of New York (Case No. 1:25-cv-04751), asserting infringement of US10534820B2. The patent relates to enhanced buyer-oriented search results — technology directly relevant to Etsy’s core marketplace discovery and ranking functionality. The case was assigned to Judge Jesse M. Furman.
The action closed on October 14, 2025, when the court granted a voluntary dismissal: all claims against Etsy were dismissed with prejudice, and all counterclaims Etsy had asserted against Querytron were dismissed without prejudice. Each party was ordered to bear its own costs, expenses, and attorneys’ fees, suggesting the parties reached an arrangement without court-ordered financial consequences.
At 131 days, the resolution is notably swift for a patent infringement action in S.D.N.Y., which typically sees much longer pre-trial phases. The asymmetric dismissal terms — Querytron’s claims extinguished with prejudice while Etsy’s counterclaims survive — is a pattern consistent with a negotiated exit. The public record does not disclose whether any licensing arrangement, payment, or covenant not to sue accompanied the dismissal.
Filing to Voluntary dismissal in 131 days
131 days — resolved faster than the median S.D.N.Y. patent case, suggesting pre-trial resolution
Voluntarily dismissed: what the asymmetric terms mean for both parties
Voluntary dismissal — but the asymmetry matters
A voluntary dismissal ends a case without a merits adjudication. Here, the dismissal is asymmetric: Querytron’s infringement claims against Etsy were dismissed WITH prejudice, meaning Querytron cannot re-file the same claims against Etsy on US10534820B2. Etsy’s counterclaims were dismissed WITHOUT prejudice, preserving Etsy’s ability to revive those claims in future proceedings if circumstances warrant.
No merits ruling issuedThe public record does not specify why terms differ
A dismissal with prejudice bars the plaintiff from reasserting the same patent claims against the same defendant — it functions as a final judgment on those specific claims. A dismissal without prejudice leaves the door open. Why Querytron agreed to the more restrictive with-prejudice standard for its own claims while Etsy’s counterclaims survived is not disclosed in the public record. This asymmetry is consistent with a negotiated resolution, but no settlement terms are publicly confirmed.
Terms undisclosed publiclyQuerytron cannot reassert these claims against Etsy
The with-prejudice dismissal of Querytron’s claims is a meaningful constraint: US10534820B2 cannot be leveraged against Etsy in future litigation on the same theory. However, the patent itself remains in force and can still be asserted against other parties in the market. Querytron’s broader licensing or assertion strategy is unaffected beyond this specific defendant relationship.
Patent still enforceable vs. othersEtsy exits cleanly, counterclaims preserved
Etsy secured dismissal of all infringement claims with prejudice — the strongest possible protection against re-litigation by Querytron on this patent. Its own counterclaims (likely invalidity or non-infringement defenses) remain live without prejudice, giving Etsy optionality. The mutual cost-bearing order avoids any fee-shifting exposure under 35 U.S.C. § 285, which would require a finding of an exceptional case.
No fee-shifting; counterclaims preservedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Querytron LLC | Company | E-commerce search technology licensor — holder of US10534820B2 (enhanced buyer-oriented search results)Search in Eureka ↗ |
| Defendant | Etsy, Inc. | Company | Etsy, Inc. — global online marketplace for handmade, vintage, and creative goods; headquartered in New York.Search in Eureka ↗ |
| Plaintiff counsel | Isaac Rabicoff | Attorney | Counsel for Querytron LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing Querytron LLCSearch in Eureka ↗ |
| Defendant counsel | Excylyn Janaize Hardin-Smith | Attorney | Counsel for Etsy, Inc.Search in Eureka ↗ |
| Defendant counsel | Michael R. Ellis | Attorney | Counsel for Etsy, Inc.Search in Eureka ↗ |
| Defendant counsel | Ricardo Bonilla | Attorney | Counsel for Etsy, Inc.Search in Eureka ↗ |
| Defendant law firm | Fish & Richardson LLP | Law Firm | Representing Etsy, Inc.Search in Eureka ↗ |
| Defendant law firm | Fish & Richardson PC (Dallas) | Law Firm | Representing Etsy, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Jesse M. Furman | Judge | New York Southern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal order is precisely worded to create an asymmetric finality: Querytron’s infringement claims are extinguished with prejudice — constituting a full bar to re-litigation against Etsy on US10534820B2 — while Etsy’s counterclaims are preserved without prejudice. The mutual cost-bearing provision forecloses any fee-shifting argument under § 285. No merits finding on infringement, validity, or claim scope was issued, meaning the patent’s enforceability against third parties remains entirely unresolved by this proceeding.
US10534820B2 — Enhanced Buyer-Oriented Search Results Technology
US10534820B2 covers enhanced buyer-oriented search results — technology directed at improving how e-commerce search systems surface, rank, or present product listings to prospective purchasers. The patent application number is US11/340905. This positions the IP squarely in the competitive domain of search relevance, personalization, and marketplace discovery, all of which are core infrastructure features for modern e-commerce platforms. The patent was asserted as issued (B2 designation), indicating it has completed examination and grant.
For marketplace platforms, search ranking is a primary commercial lever — it determines product visibility, conversion rates, and seller revenue distribution. A patent covering buyer-oriented search result enhancement, if broadly construed, could implicate recommendation engines, query reformulation, behavioral ranking signals, and A/B-tested result presentation layers. The fact that this patent was not challenged to invalidity on the merits in this action means its claim scope has not been publicly tested, elevating FTO risk for similarly situated platforms.
Should you run an FTO against US10534820B2?
Any company operating an e-commerce marketplace, product search engine, or buyer-facing recommendation system should treat US10534820B2 as a live FTO consideration. The patent was not invalidated or narrowed in this action, and Querytron retains full enforcement rights against parties other than Etsy. Product teams building or iterating on search ranking, results personalization, or buyer-intent-driven discovery features face the highest exposure and should document design-around analysis proactively.
PatSnap Eureka’s FTO Search Agent allows IP and R&D teams to run structured freedom-to-operate searches against US10534820B2, mapping claim elements against your specific product architecture and surfacing prior art that could support invalidity arguments. Eureka can also flag related continuations or family members in the same lineage, helping you build a complete picture of Querytron’s search-technology portfolio before product launch or feature release.
Run a freedom-to-operate analysis on US10534820B2 to assess your product’s exposure
Run FTO in Eureka →Similar E-Commerce Search Patent Cases in S.D.N.Y. and Beyond
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What this case signals for the e-commerce search patent IP landscape
A swift voluntary dismissal with asymmetric prejudice terms in a search-tech patent case raises pointed questions for marketplace platforms and patent holders alike.
With-prejudice dismissals signal negotiated finality — not weakness
When a patent plaintiff agrees to dismiss with prejudice, it typically signals either a licensing arrangement, a covenant not to sue, or a strategic decision to move on. For Etsy, the outcome is commercially clean. For other e-commerce platforms, the open question is whether Querytron pursues US10534820B2 against similar search implementations elsewhere.
Buyer-oriented search patent risk is live for other marketplace platforms
US10534820B2 was not invalidated or adjudicated here — it survives in full force. Any marketplace or e-commerce platform deploying buyer-oriented search ranking, personalization, or results-enhancement features should assess exposure. The patent’s claims were never tested on the merits in this action, leaving its enforceability scope uncertain but intact.
Querytron v Etsy — key questions answered
Querytron LLC filed a patent infringement action against Etsy, Inc. in the Southern District of New York on June 5, 2025, asserting US10534820B2 (enhanced buyer-oriented search results). The case was voluntarily dismissed on October 14, 2025 — Querytron’s claims against Etsy with prejudice, Etsy’s counterclaims without prejudice — with each party bearing its own costs. No merits ruling was issued.
US10534820B2 covers enhanced buyer-oriented search results technology relevant to e-commerce product discovery and search ranking. Etsy operates a major online marketplace where search result quality and ranking are central to its commercial model. The patent’s claims, as asserted, appear to implicate the way Etsy surfaces and presents product listings to buyers — though no court construed the claims in this action.
Querytron’s infringement claims were dismissed with prejudice, meaning it cannot re-file those specific claims against Etsy based on US10534820B2. Etsy’s counterclaims were dismissed without prejudice, meaning Etsy retains the ability to revive those claims — most likely invalidity challenges — in future proceedings. This asymmetry is commercially significant and suggests a negotiated outcome.
Yes. The with-prejudice dismissal only bars Querytron from re-asserting these claims against Etsy. US10534820B2 remains in force and enforceable against other parties. Any e-commerce or marketplace platform with buyer-oriented search functionality should assess their exposure independently, as the patent’s validity and claim scope were not adjudicated in this action.
131 days is unusually fast for a patent infringement action in the Southern District of New York, where pre-trial phases typically extend well beyond a year. The rapid voluntary dismissal suggests either early-stage licensing discussions concluded post-filing, a pre-suit negotiation that carried over, or a strategic decision by Querytron not to litigate to merits. The public record does not disclose any settlement terms or licensing arrangement.
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