Prosecution Insights
Last updated: August 18, 2026

Examiner: LEPISTO, RYAN A

Tech Center 4100 • Art Units: 2872 2874 2882 2883 4100

This examiner grants 88% of resolved cases

Performance Statistics

87.9%
Allow Rate
+27.9% vs TC avg
1,204
Total Applications
+8.2%
Interview Lift
679
Avg Prosecution Days
Based on 1173 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
34.4%
§102 Novelty
45.5%
§103 Obviousness
12.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18543919 DIFFRACTIVE WAVEGUIDE HAVING NANOIMPRINT LITHOGRAPHY RESIN WITH NANOPARTICLES Final Rejection GOOGLE LLC
18822957 MULTICORE OPTICAL FIBER AND DESIGN METHOD Non-Final OA NTT, Inc.
18616829 SECOND ORDER MODE WAVEGUIDE COUPLING Final Rejection Honeywell International Inc.
18696383 GUIDANCE FOR INSTALLATION OF FIBER OPTIC CABLES IN CABLE DISTRIBUTION SYSTEMS HAVING A HIGH FIBER COUNT Non-Final OA CORNING RESEARCH & DEVELOPMENT CORPORATION
18340271 HIGH DENSITY OPTICAL SPLITTER WITH EXTERNAL FANOUT DEVICE Non-Final OA CORNING RESEARCH & DEVELOPMENT CORPORATION
18667503 OPTICAL MODULE Non-Final OA FURUKAWA ELECTRIC CO., LTD.
18421102 TUNABLE PHOTONIC COUPLERS FOR ELECTRONIC/PHOTONIC SYSTEMS AND METHODS OF FORMING THE SAME Non-Final OA Taiwan Semiconductor Manufacturing Company Limited
18402016 PHOTONIC ASSEMBLY INCLUDING AN EMBEDDED OPTICAL CONNECTOR DIE AND METHODS FOR FORMING THE SAME Non-Final OA Taiwan Semiconductor Manufacturing Company Limited
18510576 ALTERNATING FILTER STACK ASSEMBLY FOR MULTIPLEXER AND DEMULTIPLEXER APPLICATIONS Final Rejection Cisco Technology, Inc.
18291992 FUSION SPLICER Final Rejection SUMITOMO ELECTRIC INDUSTRIES, LTD.
18287499 OPTICAL CONNECTION COMPONENT AND OPTICAL WIRING Non-Final OA SUMITOMO ELECTRIC INDUSTRIES, LTD.
18552224 OPTICAL FIBER CABLE Final Rejection SUMITOMO ELECTRIC INDUSTRIES, LTD.
18389622 OPTICAL CABLE FOR BLOWN INSTALLATION Non-Final OA PRYSMIAN S.p.A.
18720016 TELECOMMUNICATIONS RACK ASSEMBLY FOR TELECOMMUNICATIONS MODULES Non-Final OA AFL Telecommunications LLC
18207435 CONNECTION MECHANISM AND LOCK MECHANISM USED IN OPTICAL TOMOGRAPHY APPARATUS Final Rejection GENESIS MEDTECH JAPAN CO., LTD.

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