Short Summary
Cisco has filed an IPR petition seeking to invalidate claims 1,2,4,6,19,21 of the ’721 Raman‑pump optimization patent, arguing they are obvious over Sugaya and, in combination, over Farmer. The petition stresses prompt filing and argues against discretionary denial.
Detailed Summary
In Petition IPR2025-00241, Cisco Systems, Inc. challenges six claims of U.S. Patent No. 8,441,721, which cover a matrix‑multiplication technique for determining Raman pump power settings in wavelength‑division‑multiplexed optical fiber systems. Cisco asserts that the method was already disclosed in the Sugaya publication, rendering the claims obvious under 35 U.S.C. § 103, and that the combination of Sugaya with Farmer’s teachings further anticipates the same claims. The petition details the technical background, the prior‑art references, and argues that discretionary denial under the Fintiv factors and § 325(d) is inappropriate, seeking institution of the IPR.
Practitioner Note
This case demonstrates the evidentiary and procedural standards applied in patent matters before local courts. Understanding the court's reasoning in CISCO SYSTEMS, INC. vs WSOU Investments LLC d/b/a Brazos Licensing and Development is valuable context for structuring arguments or assessing risk in similar proceedings.
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