US 10714890

Here's a concise summary of US Patent 10714890:

US Patent: 10714890

• Title: Transmitter optical subassembly arrangement with vertically-mounted monitor photodiodes
• Assignee: Applied Optoelectronics Inc.
• Inventors: Kai-Sheng Lin, Hsiu-Che Wang, Kevin Liu
• Filing Date: 2019-02-06
• Issue Date: 2020-07-14
• Abstract: The patent describes a multi-channel Transmitter Optical Subassembly (TOSA) designed with vertically-mounted Monitor Photodiodes (MPDs). This vertical mounting aims to reduce the overall dimensions of the TOSA housing and enhance the quality of the Radio Frequency (RF) driving signal. By positioning MPDs above their associated Laser Diodes (LDs), the areas next to the LDs, typically used for MPDs, become available for patterning conductive RF traces. These traces can then extend closer to the LDs, allowing for shorter wire bonds, which in turn improves RF performance.

Plain-Language Overview of Independent Claims:

• Claim 1 (TOSA Module): This claim describes a Transmitter Optical Subassembly (TOSA) module. It includes a surface where laser diodes (LDs) are mounted. At least one LD on this surface emits a portion of its optical power backward along a path. The TOSA also has a "base portion" which is a feedthrough device. This feedthrough device provides a vertical mounting surface for monitor photodiodes (MPDs). A first MPD is placed on this vertical surface, with its light-receiving area aligned with the first LD's optical path. This alignment is achieved because the vertical MPD mounting surface is positioned substantially perpendicular to the LD mounting surface, ensuring the optical path from the LD intersects the MPD's light-receiving area.
• Claim 11 (Method for Optically Coupling MPDs): This claim outlines a method for connecting MPDs to LDs in a multi-channel TOSA housing. The method involves mounting at least one MPD to a vertical mounting surface on a feedthrough device. Conductive traces are patterned onto surfaces of this feedthrough device. The feedthrough device is then inserted into a cavity within the TOSA housing. This insertion process brings the conductive traces close to the LDs inside the TOSA and simultaneously causes the vertically-mounted MPDs to become optically coupled with the back-side emission surfaces of their corresponding LDs.
• Claim 15 (Multi-Channel Optical Transceiver Module): This claim describes a multi-channel optical transceiver module. It includes a Printed Circuit Board Assembly (PCBA) and a multi-channel TOSA arrangement connected to the PCBA. The TOSA arrangement, similar to Claim 1, features an LD mounting surface with at least a first LD emitting a portion of optical power backward along a path. It also has a base portion (a feedthrough device) that provides a vertical MPD mounting surface, and a first MPD on this surface. The first MPD's light-receiving region is optically aligned with the first LD's optical path because the vertical MPD mounting surface is substantially transverse to the LD mounting surface, causing the optical path to intersect the MPD. The module also includes a multi-channel receiver optical subassembly arrangement.

Litigation Information:
Based on the provided patent text, US patent 10714890 is involved in the following litigation:

• A PTAB case, IPR2026-00122, has been filed and is pending.
• Two US cases have been filed in the California Northern District Court: 5:24-cv-08165 and 3:24-cv-08165.
• The first worldwide family litigation has also been filed.

I could not find specific docket entries for these cases in the CAFC 2026 dockets via the search tool; the search results provided general CAFC information rather than specific case filings for patent 10714890 or its related case numbers in the CAFC system. Therefore, while litigation is confirmed, detailed status or court actions within the CAFC specifically for these case numbers are not available through the provided search functionality.Here's a concise summary of US Patent 10714890:

US Patent: 10714890

• Title: Transmitter optical subassembly arrangement with vertically-mounted monitor photodiodes
• Assignee: Applied Optoelectronics Inc.
• Inventors: Kai-Sheng Lin, Hsiu-Che Wang, Kevin Liu
• Filing Date: 2019-02-06
• Issue Date: 2020-07-14
• Abstract: The patent describes a multi-channel Transmitter Optical Subassembly (TOSA) designed with vertically-mounted Monitor Photodiodes (MPDs). This vertical mounting aims to reduce the overall dimensions of the TOSA housing and enhance the quality of the Radio Frequency (RF) driving signal. By positioning MPDs above their associated Laser Diodes (LDs), the areas next to the LDs, typically used for MPDs, become available for patterning conductive RF traces. These traces can then extend closer to the LDs, allowing for shorter wire bonds, which in turn improves RF performance.

Plain-Language Overview of Independent Claims:

• Claim 1 (TOSA Module): This claim describes a Transmitter Optical Subassembly (TOSA) module. It includes a surface where laser diodes (LDs) are mounted. At least one LD on this surface emits a portion of its optical power backward along a path. The TOSA also has a "base portion" which is a feedthrough device. This feedthrough device provides a vertical mounting surface for monitor photodiodes (MPDs). A first MPD is placed on this vertical surface, with its light-receiving area aligned with the first LD's optical path. This alignment is achieved because the vertical MPD mounting surface is positioned substantially perpendicular to the LD mounting surface, ensuring the optical path from the LD intersects the MPD's light-receiving area.
• Claim 11 (Method for Optically Coupling MPDs): This claim outlines a method for connecting MPDs to LDs in a multi-channel TOSA housing. The method involves mounting at least one MPD to a vertical mounting surface on a feedthrough device. Conductive traces are patterned onto surfaces of this feedthrough device. The feedthrough device is then inserted into a cavity within the TOSA housing. This insertion process brings the conductive traces close to the LDs inside the TOSA and simultaneously causes the vertically-mounted MPDs to become optically coupled with the back-side emission surfaces of their corresponding LDs.
• Claim 15 (Multi-Channel Optical Transceiver Module): This claim describes a multi-channel optical transceiver module. It includes a Printed Circuit Board Assembly (PCBA) and a multi-channel TOSA arrangement connected to the PCBA. The TOSA arrangement, similar to Claim 1, features an LD mounting surface with at least a first LD emitting a portion of optical power backward along a path. It also has a base portion (a feedthrough device) that provides a vertical MPD mounting surface, and a first MPD on this surface. The first MPD's light-receiving region is optically aligned with the first LD's optical path because the vertical MPD mounting surface is substantially transverse to the LD mounting surface, causing the optical path to intersect the MPD. The module also includes a multi-channel receiver optical subassembly arrangement.

Litigation Information:
Based on the provided patent text from Google Patents, US Patent 10714890 is currently subject to litigation:

• A PTAB case, IPR2026-00122, has been filed and is pending.
• Two US cases have been filed in the California Northern District Court with case numbers 5:24-cv-08165 and 3:24-cv-08165.
• The first worldwide family litigation has also been filed.

While the patent is confirmed to be involved in litigation, specific docket entries for these cases within the CAFC 2026 dockets were not returned by direct searches, which yielded general information on CAFC searches rather than specific case details.