Short Summary
Marvell has filed an IPR petition seeking to invalidate 19 claims of Credo’s ’111 patent covering high‑speed serial‑link equalization. The challenger relies on a combination of prior‑art references that teach known equalization, preset selection, and training techniques.
Detailed Summary
In Petition IPR2025‑01220, Marvell Semiconductor, Inc. challenges U.S. Patent No. 11,032,111 owned by Credo Technology Group Ltd., asserting that the patent’s 19 claims are unpatentable under 35 U.S.C. §103. The petition outlines five statutory grounds, each pairing the ’111 claims with combinations of prior‑art references such as Berke, Cornelius, Ran, Mejia, and Stauffer. It argues that the claimed methods—selecting initial pre‑equalizer coefficients, training, and updating them in high‑speed serial links—are well‑known in the field of SerDes and would have been obvious to a person of ordinary skill. No claim construction or expert testimony is presented, and the petition seeks institution of the review.
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in Marvell Semiconductor, Inc. vs Credo Technology Group Ltd. is valuable context for structuring arguments or assessing risk in similar proceedings.
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