Prosecution Insights
Last updated: April 19, 2026

Examiner: CHU, CHRIS H

Tech Center 2800 • Art Units: 2874

This examiner grants 53% of resolved cases

Performance Statistics

53.1%
Allow Rate
-14.9% vs TC avg
694
Total Applications
+10.1%
Interview Lift
1091
Avg Prosecution Days
Based on 650 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
20.0%
§102 Novelty
74.2%
§103 Obviousness
1.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18211696 CO-ALKALI DOPED OPTICAL FIBERS Non-Final OA CORNING INCORPORATED
17483968 PHOTONIC INTEGRATED CIRCUIT DESIGN FOR PLUG-AND-PLAY MEASUREMENT DEVICE INDEPENDENT-QUANTUM KEY DISTRIBUTION (MDI-QKD) Final Rejection General Electric Company
18015821 ASYMMETRIC INTERCONNECTION OF CONNECTORS Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18188499 WAVEGUIDE WITH ORGANIC SOLID CRYSTAL SUBSTRATE Non-Final OA Meta Platforms Technologies, LLC
18446424 EMBEDDED SILICON PHOTONICS CHIP IN A MULTI-DIE PACKAGE Final Rejection Taiwan Semiconductor Manufacturing Company, Ltd.
17697822 EMBEDDED SILICON PHOTONICS CHIP IN A MULTI-DIE PACKAGE Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18469607 OPTICAL FIBER Final Rejection FURUKAWA ELECTRIC CO., LTD.
18157626 OPTICAL COUPLER FOR VERTICAL OPTICAL COUPLING Non-Final OA Cisco Technology, Inc.
16714100 OPTICAL GLASS, AND OPTICAL ELEMENT, OPTICAL SYSTEM, CEMENTED LENS, INTERCHANGEABLE CAMERA LENS, AND OPTICAL DEVICE USING SAME Non-Final OA NIKON CORPORATION
18229936 ANNEALED SUBUNITS IN BUNDLED DROP ASSEMBLY AND PROCESS OF ANNEALING SUBUNITS IN BUNDLED DROP ASSEMBLY Non-Final OA CORNING RESEARCH & DEVELOPMENT CORPORATION
18206268 MULTICORE OPTICAL FIBER SYSTEM CONNECTIVITY IN DATA CENTERS Non-Final OA CORNING RESEARCH & DEVELOPMENT CORPORATION
17974683 ATTACHMENT BODIES AND OPTICAL CABLE ASSEMBLIES FOR MATING WITH COMPACT MULTIPORTS Non-Final OA Corning Research & Development Corporation
17368398 SINGLE-MODE OPTICAL FIBER WITH THIN COATING FOR HIGH DENSITY CABLES AND INTERCONNECTS Non-Final OA CORNING RESEARCH & DEVELOPMENT CORPORATION
18686932 OPTICAL FIBER Final Rejection SUMITOMO ELECTRIC INDUSTRIES, LTD.
18319854 Optical Devices and Methods of Manufacture Final Rejection Taiwan Semiconductor Manufacturing Co., Ltd.
17519411 Integrated Optical Switch Having Doped Fiber/Waveguide Amplifiers Packaged in A Transposer Non-Final OA Mellanox Technologies, Ltd.
18250750 FERRULE FOR OPTICAL CONNECTOR AND METHOD OF MANUFACTURING OPTICAL CONNECTOR Final Rejection Fujikura Ltd.
18171788 FIBER OPTIC CONNECTOR WITH MOLDED TUBE FOR FACILITATING INJECTION OF BONDING MATERIAL Final Rejection CommScope Technologies LLC
17950414 SURGICAL LASER FIBER WITH REFLECTIVE STANDOFF SLEEVE AND METHOD OF PREVENTING DUST PARTICLE BUILDUP WITHIN A STANDOFF SLEEVE Final Rejection OPTICAL INTEGRITY, INC.
18245273 HOLLOW CORE OPTICAL WAVEGUIDES AND METHODS FOR MODIFICATION THEREOF Non-Final OA University of Southampton
18148547 ULTRA-LOW LOSS OPTICAL FIBERS FOR LONG HAUL COMMUNICATIONS Final Rejection Sterlite Technologies Limited
17175326 OPTICAL FIBRE HAVING CENTERLINE CORE PROFILE Final Rejection Sterlite Technologies Limited
18190926 PHOTONIC COMMUNICATION PLATFORM, PACKAGES AND RELATED FABRICATION Final Rejection Lightmatter, Inc.
18353634 Method of Manufacturing Nanofiber Cavity for Quantum Computing and Device Final Rejection Nanofiber Quantum Technologies, Inc.
18024326 FIBRE OPTIC CABLE, METHODS OF MANUFACTURE AND USE THEREOF Non-Final OA EMTELLE UK LIMITED

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