Invalidity dossier
US 10788690
Optical isolator array for use in an optical subassembly module
Current assignee: Applied Optoelectronics Inc
Added 5/13/2026, 6:00:31 AM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
The search for CAFC dockets for US10788690 in 2026 did not return any specific case listings for this patent number. The results provided general information about accessing case records at the U.S. Court of Appeals for the Federal Circuit. It appears that a direct hit on a case specifically involving patent 10788690 within CAFC dockets for 2026 was not found in this search. This does not mean there isn't one, just that it wasn't immediately retrieved by the general search. For specific case information, it often requires navigating PACER or contacting the Clerk's Office with more precise details.
Here is a concise summary of US Patent 10788690:
US Patent 10788690 Summary
- Title: Optical isolator array for use in an optical subassembly module
- Assignee: Applied Optoelectronics Inc
- Inventors: Kai-Sheng Lin, Kevin liu, Ziliang CAI
- Filing Date: 2019-01-25
- Issue Date: 2020-09-29
- Abstract: This disclosure describes an optical isolator array with a magnetic base for mounting and aligning multiple optical isolators within an optical subassembly module. The magnetic base provides a mounting surface for N optical isolators, where N corresponds to the optical channel count (e.g., 4-channels, 8-channels). The base's width accommodates the desired number of isolators, which are uniformly spaced along the same axis. An adhesive, such as UV-curing optical adhesive, secures each optical isolator at a predefined position and enhances structural integrity.
Plain-Language Overview of Independent Claims:
Independent Claim 1: This claim describes an optical isolator array designed for use in an optical subassembly module. It comprises a first magnetic base with at least one mounting surface. A plurality of optical isolators are mounted on this surface, arranged substantially parallel to each other. An adhesive layer is disposed on the mounting surface to both couple the optical isolators to the magnetic base and to hold each isolator in a specific, predetermined position relative to the others.
Independent Claim 11: This claim defines an optical transceiver. The transceiver includes a housing that contains at least one optical transmitter subassembly (TOSA) arrangement and an optical receiver subassembly (ROSA). The TOSA arrangement itself consists of a substrate with a mounting surface, and a plurality of laser diodes are mounted on this substrate. Each laser diode emits a distinct channel wavelength along its own light path. Crucially, an optical isolator array, which comprises at least a first magnetic base and multiple optical isolators, is mounted on the same substrate's mounting surface, adjacent to the laser diodes. This arrangement ensures that the light paths from the laser diodes pass through the optical isolator array, and each optical isolator is optically aligned with its corresponding laser diode via its light path.
Litigation/Docket Information:
The patent family has ongoing litigation. As of the current date (April 26, 2026), several cases related to this patent family have been filed:
- Multiple US cases in the California Northern District Court (e.g., 3:24-cv-01010, 5:24-cv-01010, 4:24-cv-09041, 3:24-cv-09041).
- Two PTAB cases, IPR2025-01570 and IPR2025-00437, are pending and instituted.
- First worldwide family litigation has also been filed.
A specific search for US10788690 in CAFC 2026 dockets did not yield direct case results, indicating no explicit CAFC appeals were immediately found through a general search. This does not definitively rule out the existence of such a case, as more specific search parameters may be required for comprehensive CAFC docket review.
Generated 5/24/2026, 6:48:32 AM