Short Summary
Greenthread, LLC has filed a notice of appeal to the Federal Circuit challenging the PTAB’s finding that multiple claims of U.S. Patent 10,734,481 are obvious. The appeal focuses on alleged errors in claim construction, obviousness analysis, and consideration of secondary factors.
Detailed Summary
In a notice of appeal dated April 16, 2026, Greenthread, LLC contests the Patent Trial and Appeal Board’s final written decision that found claims 1‑9, 13, 15, 17, 20, 22‑27, 31‑32, and 34 of U.S. Patent 10,734,481 unpatentable as obvious under 35 U.S.C. § 103(a). The Patent Owner alleges the Board erred in its claim constructions, misinterpreted the prior art, failed to properly evaluate secondary considerations, and did not give adequate weight to the record evidence. The appeal has been filed with the United States Court of Appeals for the Federal Circuit, seeking reversal of the Board’s findings.
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in Monolithic Power Systems, Inc. vs Greenthread, LLC is valuable context for structuring arguments or assessing risk in similar proceedings.
Related Cases
Google LLCvsDialect LLC
Google and Dialect have jointly moved to terminate IPR2024-00750 after reaching a settlement, invoking 35 U.S.C. §317.
Cisco Systems, Inc.vsVIDEO SOLUTIONS PTE. LTD.
Chris Hoff of Barnes & Thornburg filed a Director Review request on behalf of VIDEO SOLUTIONS PTE. LTD. after the Board instituted IPR2024-00695 against Cisco Systems. The owner contends the Board’s sua sponte arguments merit a higher‑level review.
Intel Corporation et al.vsTelefonaktiebolaget LM Ericsson
Intel Corporation's attempt to invalidate Ericsson's video coding patent was denied by the PTAB on obviousness grounds (103). The Board ruled that Petitioner failed to demonstrate that specific numerical coefficients in the claimed offset equations were 'result-effective variables.'
Comcast Cable Communications, LLC et al.vsEntropic Communications, LLC
Comcast has filed a petition to review Entropic’s ’275 patent, asserting that all twenty claims are anticipated or obvious over prior art such as Zhang and its combinations. The petition argues that discretionary denial does not apply and seeks cancellation of the claims.
TikTok Inc. et al.vsCellspin Soft, Inc.
The Director denied TikTok's IPR petitions against Cellspin Soft, citing precedent that bars foreign governments from participating in AIA proceedings. The decision vacated prior institution orders and terminated the review.
Dealing with a patent challenge?
Whether it's a Section 3(d) rejection, a post-grant opposition, or a FRAND dispute, Arctic's patent litigation team has handled it. Get a strategy call.
Disclaimer: This page contains an automated summary based on publicly available judicial records. The content is generated for informational purposes only and does not constitute legal advice. Always verify details against the original source judgment before relying on this information for any legal purpose. If you believe any information is inaccurate, please contact us.