Prosecution Insights
Last updated: October 26, 2026

William Soon Choi, USPTO Patent Examiner

Listed by the USPTO as CHOI, WILLIAM SOON

Tech Center 3700 • Art Units: 3679 3746 3753 3754

This examiner grants 74% of resolved cases

Analysis

CHOI, WILLIAM SOON works in Tech Center 3700 and Art Unit 3679. The profile reports 395 resolved cases, a 74.4% allowance rate, and a median of 959 days to allowance. The interview lift is 11.5%, indicating a positive association with allowance outcomes.

VICTAULIC Company, C G Air Systèmes Inc., and Red-White Valve Corp. are the listed leading companies. SCHWEGMAN LUNDBERG & WOESSNER, P.A., BALLARD SPAHR LLP, and BUCHANAN, INGERSOLL & ROONEY PC are the listed leading firms. Interview preparation can be considered alongside planning for the reported prosecution duration.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

74.4%
Allow Rate
+4.4% vs TC avg
437
Total Applications
+11.5%
Interview Lift
959
Avg Prosecution Days
Based on 395 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
33.7%
§102 Novelty
38.4%
§103 Obviousness
24.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19056763 JOINT Final Rejection HONDA MOTOR CO., LTD.
19370343 FLOW PATH STRUCTURE AND METHOD FOR MANUFACTURING FLOW PATH STRUCTURE Final Rejection AISIN CORPORATION
19320081 QUICK CONNECTOR Final Rejection A. RAYMOND ET CIE

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Frequently Asked Questions

What is examiner William Soon Choi's allowance rate?

74.4% of resolved applications examined by William Soon Choi were allowed (395 resolved cases), compared with 61.2% across Art Unit 3679 over the last five years.

Does an interview help with examiner William Soon Choi?

This examiner's interview lift is +11.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner William Soon Choi take to allow a patent?

Applications allowed by William Soon Choi took 959 days on average from filing to allowance.

Which art unit does examiner William Soon Choi work in?

William Soon Choi examines applications in Art Unit 3679 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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