US 10379301

Here's a concise summary of US Patent 10379301:

Title: Multi-channel parallel optical receiving device

Assignee: Applied Optoelectronics Inc [cite: US10379301B2]

• Note: The patent was originally assigned to Global Technology Inc. on February 14, 2017, and then reassigned to Applied Optoelectronics, Inc. on September 25, 2023. On August 1, 2025, a security interest was assigned to BOKF, NA D/B/A BOK Financial. [cite: US10379301B2]

Inventors: Jian-Hong Luo, Dong-Biao JIANG, Peng Nie, Xiao-Liang DING [cite: US10379301B2]

Filing Date: February 14, 2017 [cite: US10379301B2]

Issue Date: August 13, 2019 [cite: US10379301B2]

Abstract: The patent describes a multi-channel parallel optical receiving device that includes a carrier, a light receiving chip, and multiple optoelectronic diodes on one end of the carrier. An optical fiber connector is at the other end. An arrayed waveguide grating (AWG) is also on the carrier's top surface. The AWG's input end connects to the optical fiber connector to receive an optical signal. The AWG then divides this signal into multi-channel optical signals based on their wavelengths. A top surface at the output end of the AWG is set at a predetermined angle (41 to 46 degrees, preferably 42 degrees), which reflects these multi-channel optical signals to the photosensitive surfaces of the arrayed optoelectronic diodes. [cite: US10379301B2]

---

Plain-Language Overview of Independent Claims:

Independent Claim 1:
This claim describes a multi-channel parallel optical receiving device comprising:

• A carrier.
• A light receiving chip and multiple optoelectronic diodes directly placed on the same top surface of an end of the carrier. These diodes are electrically connected to the chip using bonding wires.
• An optical fiber connector at another end of the carrier.
• An arrayed waveguide grating (AWG) situated on a top surface of the carrier, specifically where the carrier's top surface underlies the middle of the AWG. The AWG has an input end connected to the optical fiber connector to receive an optical signal.
• The device processes the optical signal by dividing it into multi-channel signals in parallel based on their wavelengths using the AWG. A top surface at the output end of the AWG is angled between 41 and 46 degrees, causing the multi-channel optical signals to reflect to the photosensitive surfaces of the optoelectronic diodes, which are arranged in parallel. [cite: US10379301B2]

Independent Claim 7:
This claim describes a multi-channel parallel optical receiving device similar to Claim 1, but with a specific angle for the AWG's output end:

• A carrier.
• A light receiving chip and multiple optoelectronic diodes directly placed on the same top surface of an end of the carrier. These diodes are electrically connected to the chip via wire bonding.
• An optical fiber connector at an end of the carrier.
• An arrayed waveguide grating (AWG) situated on a top surface of the carrier, where the carrier's top surface underlies the middle of the AWG. The AWG has an input end connected to the optical fiber connector to receive an optical signal.
• The optical signal is divided into multi-channel signals in parallel by the AWG based on their wavelengths. A top surface at the output end of the AWG is at a predetermined angle of 42 degrees, causing the multi-channel optical signals to reflect to the photosensitive surfaces of the optoelectronic diodes, which are arranged in parallel. [cite: US10379301B2]

---

Litigation Information:
US Patent 10379301B2 is currently involved in litigation:

• District Court Cases:
  • Multiple US cases filed in the California Northern District Court: 5:24-cv-01010 (critical), 4:23-cv-04787, 4:24-cv-09041, 3:24-cv-01010, and 3:24-cv-09041. [cite: US10379301B2]
• PTAB Cases:
  • IPR2025-01567 filed (Pending - Instituted). [cite: US10379301B2]
  • IPR2025-00434 filed (Not Instituted - Merits). [cite: US10379301B2]

There is also a "First worldwide family litigation filed" noted. [cite: US10379301B2]

As of April 26, 2026, a search of the CAFC May 2026 dockets did not explicitly list US10379301. However, appeals from the noted District Court or PTAB cases could potentially appear in future CAFC dockets.