Prosecution Insights
Last updated: October 26, 2026

Catheryne Chen, USPTO Patent Examiner

Listed by the USPTO as CHEN, CATHERYNE

Tech Center 1600 • Art Units: 1655

This examiner grants 38% of resolved cases

Analysis

CHEN, CATHERYNE is a USPTO patent examiner in tech center 1600 and art unit 1655. The profile records 793 resolved cases, an allowance rate of 37.5%, and a median of 1551 days to allowance. The interview lift is 17.9%, showing a positive association with interviews despite the lower overall allowance result recorded here.

The listed companies are TCI Co., Ltd., Nicoventures Trading Limited, and Nutrition21, LLC. The listed firms are GREER, BURNS & CRAIN, LTD, SUGHRUE MION, PLLC, and Wideband IP Office. Practitioners may wish to plan for extended prosecution timing and give interview preparation a defined role in response strategy.

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

Performance Statistics

37.5%
Allow Rate
-22.5% vs TC avg
849
Total Applications
+17.9%
Interview Lift
1551
Avg Prosecution Days
Based on 793 resolved cases, 2023–2026

Rejection Statute Breakdown

14.5%
§101 Eligibility
18.3%
§102 Novelty
41.2%
§103 Obviousness
19.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18579985 CONSTITUENT, DERIVATIVE OR EXTRACT OF CANNABIS IN A WATER SOLUBLE MATRIX Non-Final OA Nicoventures Trading Limited
18291577 COMPOSITION, AND EXTRACT OF CHLAMYDOMONAS REINHARDTII Final Rejection HONDA MOTOR CO., LTD.
18822591 Application of Gastrodia elata Blume derived nano-extracellular vesicles in the preparation of drugs for the prevention and/or treatment of subarachnoid hemorrhage Non-Final OA Zhejiang University
18615328 STIMULATION OF ANGIOGENESIS BY FIBROBLAST DERIVED EXOSOMES Non-Final OA FIGENE, LLC

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Frequently Asked Questions

What is examiner Catheryne Chen's allowance rate?

37.5% of resolved applications examined by Catheryne Chen were allowed (793 resolved cases), compared with 43.3% across Art Unit 1655 over the last five years.

Does an interview help with examiner Catheryne Chen?

This examiner's interview lift is +17.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Catheryne Chen take to allow a patent?

Applications allowed by Catheryne Chen took 1,551 days on average from filing to allowance.

Which art unit does examiner Catheryne Chen work in?

Catheryne Chen examines applications in Art Unit 1655 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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