Prosecution Insights
Last updated: October 02, 2026

Examiner: PHAN, DOAN THI-THUC

Tech Center 1600 • Art Units: 1613 1623 1654

This examiner grants 43% of resolved cases

Analysis

Examiner Doan Thi-Thuc Phan operates in Art Unit 1613 of Tech Center 1600 and has 653 resolved cases. The allowance rate is 42.7 percent, and the median days to allowance is 1165. These figures suggest a challenging and lengthy prosecution environment. Applicants should be prepared for a rigorous review process that typically takes 1165 days to reach an allowance.

However, the interview lift is a significant 47.7 percent. This suggests that conducting an interview can significantly increase the chances of success compared to the 42.7 percent baseline allowance rate. With 653 resolved cases, the data strongly supports the use of interviews as a primary strategy for overcoming rejections with this examiner. The 47.7 percent lift is a critical metric for practitioners to consider when navigating the complexities of Art Unit 1613 and seeking to improve their overall prosecution outcomes.

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

Performance Statistics

42.7%
Allow Rate
-17.3% vs TC avg
745
Total Applications
+47.7%
Interview Lift
1165
Avg Prosecution Days
Based on 653 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
10.3%
§102 Novelty
46.7%
§103 Obviousness
25.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17018413 ANTITUMOR AGENT, ANTITUMOR EFFECT ENHANCER, AND ANTITUMOR KIT Non-Final OA FUJIFILM Corporation
18680005 DELIVERY OF SURFACTANT SOLUBLE AGENT Final Rejection The Procter & Gamble Company
17596502 METHODS OF TREATING BILE ACID DIARRHEA Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
17423669 Covered Stent For Local Drug Delivery Non-Final OA BIOTRONIK AG
16603359 PHARMACEUTICAL COMPOSITION FOR CANCER TREATMENT Final Rejection SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
17682819 GEL CREAM EMULSION COSMETIC COMPOSITION WITH HIGH SALT ACTIVES Non-Final OA L'OREAL
18716576 SOLID PARTICLES COMPRISING DECELLULARIZED CARDIAC TISSUE EXTRACELLULAR MATRIX AND METHODS FOR MAKING AND USING THE SAME Non-Final OA Case Western Reserve University
17611705 ISOTROPIC LIQUID CLEANSERS COMPRISING ACYL ISETHIONATE AND METHYL ACYL TAURATE SURFACTANT MIXTURES Final Rejection Conopco, Inc., d/b/a UNILEVER
17502322 DEXTROSE TABLETS WITH IMPROVED MOUTHFEEL Final Rejection FERTIN PHARMA A/S
17789104 SILICA MICROCAPSULES Final Rejection KAO CORPORATION
17251579 STABLE CO-FORMULATION OF BENZOYLUREA WITH PYRETHROIDS Final Rejection UPL LTD
18255978 HALOSCENT IN DRY SHAMPOO Final Rejection Firmenich SA
18554018 DELIVERY PARTICLES WITH HIGH CORE:WALL RATIOS Final Rejection Encapsys, LLC
18475472 Delivery Particles Based On Amine-Thiol-Ene Conjugates and Derivatives Final Rejection Encapsys, LLC
18462537 DELIVERY PARTICLES WITH HIGH CORE:WALL RATIOS Final Rejection Encapsys, LLC
18252835 BIODEGRADABLE DELIVERY PARTICLES Non-Final OA Encapsys, LLC
18252822 BIODEGRADABLE DELIVERY PARTICLES Non-Final OA Encapsys, LLC
17322842 COMPOSITIONS AND METHODS TO DISINFECT, TREAT AND PREVENT MICROBIAL INFECTIONS Non-Final OA WIAB WATER INNOVATION AB
18711120 HYALURONIC ACID FILM WITH EXCELLENT PERCUTANEOUS ABSORPTION AND MANUFACTURING METHOD THEREFOR Final Rejection JINWOO BIO CO., LTD.
18015689 BIODEGRADABLE MICROCAPSULES. PROCESS FOR PREPARING THE SAME AND METHOD OF USE THEREOF Final Rejection ISP INVESTMENTS LLC
17524709 CLAY COMPOSITIONS AND METHODS FOR IMPROVING ANIMAL PERFORMANCE Final Rejection ELANCO US INC.
18253068 METHOD FOR PREPARING BIODEGRADABLE MICROCASPULES AND USE OF THE RESULTING MICROCAPSULES Final Rejection GEM INNOV

Facing This Examiner?

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

Build Your Strategy

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