Prosecution Insights
Last updated: October 27, 2026

Annette Hoang-Anh Phan, USPTO Patent Examiner

Listed by the USPTO as PHAN, ANNETTE HOANG-ANH

Tech Center 2800 • Art Units: 1736 2896

This examiner grants 72% of resolved cases

Analysis

PHAN, ANNETTE HOANG-ANH is a USPTO patent examiner in tech center 2800 and art unit 1736. The profile records 46 resolved cases, an allowance rate of 71.7%, and a median of 1199 days to allowance. The interview lift is 9.8%, showing a positive association between interviews and allowance outcomes in the reported cases.

The listed companies are The Regents of the University of California, Topsoe A/S, and University of South Carolina. The listed firms are Boone IP Law, PLLC, FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, and Ipsilon USA - NLO. The limited case history makes the figures most useful as an initial reference. Practitioners can use the allowance rate and median timing for preliminary planning, while treating the interview measure as support for targeted rather than automatic examiner engagement.

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

Performance Statistics

71.7%
Allow Rate
+3.7% vs TC avg
64
Total Applications
+9.8%
Interview Lift
1199
Avg Prosecution Days
Based on 46 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
28.2%
§102 Novelty
46.6%
§103 Obviousness
21.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18031458 DIESEL OXIDATION CATALYST WITH ENHANCED HYDROCARBON LIGHT-OFF PROPERTIES Non-Final OA BASF MOBILE EMISSIONS CATALYSTS LLC
18711568 RECYCLING METHODS FOR LITHIUM-ION BATTERIES Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18128821 METAL-ORGANIC FRAMEWORKS FOR THE STORAGE AND DELIVERY OF HYDROGEN SULFIDE, METHODS OF MAKING AND USES OF SAME Final Rejection CORNELL UNIVERSITY
17919478 FAUJASITE TYPE ZEOLITE AND METHOD FOR PRODUCING SAME Non-Final OA JGC CATALYSTS AND CHEMICALS LTD.

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Frequently Asked Questions

What is examiner Annette Hoang-Anh Phan's allowance rate?

71.7% of resolved applications examined by Annette Hoang-Anh Phan were allowed (46 resolved cases), compared with 62.6% across Art Unit 1736 over the last five years.

Does an interview help with examiner Annette Hoang-Anh Phan?

This examiner's interview lift is +9.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Annette Hoang-Anh Phan take to allow a patent?

Applications allowed by Annette Hoang-Anh Phan took 1,199 days on average from filing to allowance.

Which art unit does examiner Annette Hoang-Anh Phan work in?

Annette Hoang-Anh Phan examines applications in Art Unit 1736 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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