Prosecution Insights
Last updated: October 27, 2026

Patricia Ann Duffy, USPTO Patent Examiner

Listed by the USPTO as DUFFY, PATRICIA ANN

Tech Center 1600 • Art Units: 1644 1645 1647

This examiner grants 53% of resolved cases

Analysis

Patricia Ann Duffy, in Tech Center 1600 and Art Unit 1644, has 573 resolved cases. The allowance rate is 52.9 percent. The median days to allowance is 1327.

The interview lift is 33.9 percent. Glaxosmithkline Biologicals S.A., Board of Regents of the University of Texas System, and University of Florida Research Foundation Inc. are the top companies. These companies represent the primary corporate interests in the examiner's docket.

WOLF GREENFIELD & SACKS, P.C., BALLARD SPAHR LLP, and Barron & Young PLLC are the top firms. The 33.9 percent lift is significant. Practitioners should use this lift to improve the 52.9 percent allowance rate and navigate the 1327-day median timeline.

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

Performance Statistics

52.9%
Allow Rate
-7.1% vs TC avg
636
Total Applications
+33.9%
Interview Lift
1327
Avg Prosecution Days
Based on 573 resolved cases, 2023–2026

Rejection Statute Breakdown

7.5%
§101 Eligibility
20.5%
§102 Novelty
28.0%
§103 Obviousness
39.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18178819 CHIMERIC ANTIGEN RECEPTORS AND USES THEREOF Final Rejection University of Florida Research Foundation, Incorporated
18097461 BACILLUS SP. PRODUCING BIOFLOCCULANT AND BIOSURFACTANT AND USE THEREOF Final Rejection ZHEJIANG UNIVERSITY
18684437 PAENIBACILLUS STRAINS PRODUCING LOW AMOUNTS OF EXOPOLYSACCARIDES Non-Final OA BASF SE
17350898 IL-10-CONTAINING VACCINES AND USES THEREOF Non-Final OA The Regents of the University of California
18685422 DEVELOPMENT OF SYNTHETIC PSEUDAMINIC ACID-BASED ANTIBACTERIAL VACCINES AGAINST ACINETOBACTER BAUMANNII Final Rejection City University of Hong Kong
18506636 COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING HUMAN CHLAMYDIAL INFECTIONS AND DISEASES USING ATTENUATED ANIMAL CHLAMYDIA Non-Final OA Board of Regents, The University of Texas System
18318062 ENDOLYSOSOMAL TARGETING CONJUGATES FOR IMPROVED DELIVERY OF CARGO MOLECULES TO THE ENDOLYSOSOMAL COMPARTMENT OF TARGET CELLS Non-Final OA Board of Regents of the University of Texas System
18681192 LEPTOSPIRAL VIRULENCE MODULATING PROTEINS AND USES THEREOF Non-Final OA Yale University
18661538 COMPOSITIONS FOR AND METHODS OF TREATING AND/OR PREVENTING MALARIA Non-Final OA THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
18580713 PROBIOTICS FOR USE IN BOOSTING THE IMMUNE SYSTEM Non-Final OA INTERNATIONAL N&H DENMARK APS
18841203 ANAPLASMA VACCINES AND METHODS OF USE THEREOF Non-Final OA Kansas State University Research Foundation
18550659 PATHOGEN MOIETIES AND USES THEREOF Final Rejection University of Iowa Research Foundation
18718636 VACCINE Non-Final OA GLAXOSMITHKLINE BIOLOGICALS SA
18686089 Shigella Vaccine Non-Final OA GLAXOSMITHKLINE BIOLOGICALS SA
18256749 Hyper-Blebbing Bacteria Non-Final OA GLAXOSMITHKLINE BIOLOGICALS SA
17628667 QUANTIFICATION OF BIOCONJUGATE GLYCOSYLATION Final Rejection GLAXOSMITHKLINE BIOLOGICALS SA
18032909 FLAGELLIN FUSION PROTEIN AND USE THEREOF Non-Final OA INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

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Frequently Asked Questions

What is examiner Patricia Ann Duffy's allowance rate?

52.9% of resolved applications examined by Patricia Ann Duffy were allowed (573 resolved cases), compared with 35.9% across Art Unit 1644 over the last five years.

Does an interview help with examiner Patricia Ann Duffy?

This examiner's interview lift is +33.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Patricia Ann Duffy take to allow a patent?

Applications allowed by Patricia Ann Duffy took 1,327 days on average from filing to allowance.

Which art unit does examiner Patricia Ann Duffy work in?

Patricia Ann Duffy examines applications in Art Unit 1644 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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