Industry Sector

Optical communications — US PTAB Patent Cases

8 decisions indexed

Page 1 of 1 · 8 total

patent · Sep 26, 2025

Accelight Technologies, Inc. et al. v.Applied Optoelectronics, Inc.

· IPR2025-01566

Accelight Technologies has filed an IPR petition seeking to invalidate claims 1‑4 of Applied Optoelectronics’ ’301 patent, arguing they are obvious over three prior‑art publications. The petition focuses on the device’s carrier structure and the angled AWG surface.

patent · Sep 26, 2025

Accelight Technologies, Inc. et al. v.Applied Optoelectronics, Inc.

· IPR2025-01567

Accelight Technologies has filed an IPR petition seeking cancellation of ten claims of Applied Optoelectronics’ U.S. Patent 10,042,116, arguing that the AWG‑based optical transceiver concepts were obvious over multiple prior‑art references.

patent terminated or settled · Apr 25, 2025

Apple Inc. v.Apex Beam Technologies LLC

· IPR2025-00910

Apple and Apex Beam Technologies jointly moved to terminate sixteen inter partes review proceedings after reaching a settlement. The PTAB granted the motion, treating the settlement agreements as confidential.

patent · Mar 11, 2025

Accelight Technologies, Inc. et al. v.Applied Optoelectronics, Inc.

· IPR2026-00093

Accelight Technologies petitions the PTAB to invalidate all twelve claims of Applied Optoelectronics' 10,578,818 optical transceiver patent, citing Wang, Koutrokois, and Tsai as anticipatory and obvious prior art.

patent · Feb 6, 2025

Cisco Systems, Inc. v.Quicker Connections LLC

· IPR2025-01088

Cisco Systems has filed an IPR petition seeking to invalidate claims 1‑12 of Quicker Connections’ U.S. Patent 7,061,859 covering fault‑protection methods in bidirectional ring networks. The petition relies on the Japanese Omichi publication as obviousness prior art and argues that a discretionary denial would be improper given related litigation.

patent · Dec 4, 2024

Senko Advanced Components, Inc. et al. v.US Conec Ltd.

· IPR2024-00805

Senko Advanced Components argues that Conec’s narrow claim constructions for its fiber‑optic adapter patent conflict with its own ITC testimony, urging the PTAB to institute the IPR.

patent terminated or settled · Feb 12, 2024

CISCO SYSTEMS, INC. v.WSOU Investments LLC d/b/a Brazos Licensing and Development

· IPR2025-00241

Cisco and Brazos Licensing have settled their dispute over U.S. Patent 8,441,721, a fiber‑Raman amplifier invention, and jointly moved to terminate the inter partes review. The motion cites public‑policy reasons and statutory authority for termination.

patent · Feb 12, 2024

CISCO SYSTEMS, INC. v.WSOU Investments LLC d/b/a Brazos Licensing and Development

· IPR2025-00241

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.

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