Prosecution Insights
Last updated: October 26, 2026

Doan Thi-Thuc Phan, USPTO Patent Examiner

Listed by the USPTO as PHAN, DOAN THI-THUC

Tech Center 1600 • Art Units: 1613 1623 1654

This examiner grants 43% of resolved cases

Analysis

PHAN, DOAN THI-THUC is a USPTO patent examiner in tech center 1600 and art unit 1613. The profile covers 656 resolved cases, an allowance rate of 42.8%, and a median of 1165 days to allowance. The interview lift is 47.6%, indicating a strong positive association between interviews and allowance outcomes in the reported cases.

The listed companies are Encapsys LLC, Rks Global Pte. Ltd., and Nicoventures Trading Limited. The listed firms are SUGHRUE MION, PLLC, BrainSpark Associates, LLC, and Buchanan Ingersoll & Rooney PC. The allowance rate supports close attention to claim strategy and rejection analysis. The interview measure makes direct examiner engagement a significant planning consideration, while the median timing should be reflected in prosecution schedules and business timelines.

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

Performance Statistics

42.8%
Allow Rate
-17.2% vs TC avg
752
Total Applications
+47.6%
Interview Lift
1165
Avg Prosecution Days
Based on 656 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
10.4%
§102 Novelty
46.6%
§103 Obviousness
25.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17724056 ORAL LOZENGE PRODUCTS Final Rejection NICOVENTURES TRADING LIMITED
17018413 ANTITUMOR AGENT, ANTITUMOR EFFECT ENHANCER, AND ANTITUMOR KIT Non-Final OA FUJIFILM Corporation
17423669 Covered Stent For Local Drug Delivery Non-Final OA BIOTRONIK AG
17596502 METHODS OF TREATING BILE ACID DIARRHEA Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
17926082 ENCAPSULATED PANCREATIC ISLET Non-Final OA OTSUKA PHARMACEUTICAL FACTORY, INC.
16603359 PHARMACEUTICAL COMPOSITION FOR CANCER TREATMENT Final Rejection SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
18716576 SOLID PARTICLES COMPRISING DECELLULARIZED CARDIAC TISSUE EXTRACELLULAR MATRIX AND METHODS FOR MAKING AND USING THE SAME Non-Final OA Case Western Reserve University
18923866 MEDICAL GRADE NANOFIBRILLAR CELLULOSE HYDROGEL, A METHOD FOR TREATING A SUBJECT IN NEED OF TREATMENT OF BODY WITH IMPLANTABLE MATERIAL AND A METHOD FOR MANUFACTURING THE MEDICAL GRADE NANOFIBRILLAR CELLULOSE HYDROGEL Non-Final OA UPM-Kymmene Corporation
17611705 ISOTROPIC LIQUID CLEANSERS COMPRISING ACYL ISETHIONATE AND METHYL ACYL TAURATE SURFACTANT MIXTURES Final Rejection Conopco, Inc., d/b/a UNILEVER
17344380 WATER CONDITIONING AND DRIFT CONTROL COMPOSITIONS AND METHODS OF USE Non-Final OA SPECIALTY OPERATIONS FRANCE

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Doan Thi-Thuc Phan's allowance rate?

42.8% of resolved applications examined by Doan Thi-Thuc Phan were allowed (656 resolved cases), compared with 34.0% across Art Unit 1613 over the last five years.

Does an interview help with examiner Doan Thi-Thuc Phan?

This examiner's interview lift is +47.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Doan Thi-Thuc Phan take to allow a patent?

Applications allowed by Doan Thi-Thuc Phan took 1,165 days on average from filing to allowance.

Which art unit does examiner Doan Thi-Thuc Phan work in?

Doan Thi-Thuc Phan examines applications in Art Unit 1613 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month