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Last updated: October 27, 2026

Christopher Won-Bin Chay, USPTO Patent Examiner

Listed by the USPTO as CHAY, CHRISTOPHER WON-BIN

Tech Center 2100 • Art Units: 2143

This examiner grants 0% of resolved cases

Performance Statistics

—

Allow Rate

-55.0% vs TC avg

1

Total Applications

—

Interview Lift

0

Avg Prosecution Days

Based on 0 resolved cases, 2023–2026

Rejection Statute Breakdown

50.0%

§101 Eligibility

0%

§102 Novelty

50.0%

§103 Obviousness

0%

§112 Clarity

Currently Pending Office Actions

App #	Title	Status	Assignee
18588639	INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD	Non-Final OA	Hitachi, Ltd.

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Who Appears Before This Examiner

Top companies before this examiner

Hitachi Ltd. (1)

Law firms appearing most often

PROCOPIO, CORY, HARGREAVES & SAVITCH LLP (1)

Frequently Asked Questions

Which art unit does examiner Christopher Won-Bin Chay work in?

Christopher Won-Bin Chay examines applications in Art Unit 2143 in Tech Center 2100 (Computing & Software).