Prosecution Insights
Last updated: October 27, 2026

Bradley Duffy, USPTO Patent Examiner

Listed by the USPTO as DUFFY, BRADLEY

Tech Center 1600 • Art Units: 1638 1643

This examiner grants 54% of resolved cases

Analysis

DUFFY, BRADLEY is a USPTO patent examiner in tech center 1600 and art unit 1638. The profile records 754 resolved cases, a 54.4% allowance rate, and a median of 1361 days to allowance. Interviews are associated with a 46.0% lift, making interview preparation a material consideration for prosecution strategy in this docket.

The listed company matters include Amgen Inc., Bms, and University of Florida Research Foundation Inc. The listed firms are FOLEY & LARDNER LLP, MORRISON & FOERSTER LLP, and Casimir Jones, S.C. Practitioners handling matters here can use the interview result alongside the allowance and pendency figures when deciding whether to prioritize examiner engagement.

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

Performance Statistics

54.4%
Allow Rate
-5.6% vs TC avg
807
Total Applications
+46.0%
Interview Lift
1361
Avg Prosecution Days
Based on 754 resolved cases, 2023–2026

Rejection Statute Breakdown

4.3%
§101 Eligibility
19.3%
§102 Novelty
29.2%
§103 Obviousness
31.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17575762 CHIMERIC ANTIGEN RECEPTOR COMPRISING INTERLEUKIN-15 INTRACELLULAR DOMAIN AND USES THEREOF Final Rejection University of Florida Research Foundation, Incorporated
19447763 Albumin Bound Macromolecule Tri-Agonist Activating GLP 1/GIP/Glucagon Receptors And Methods Therefor Non-Final OA AlbuNext, LLC
18280561 PROGNOSTIC PATHWAYS FOR HIGH RISK SEPSIS PATIENTS Non-Final OA KONINKLIJKE PHILIPS N.V.
19393395 LONG ACTING ALPHA4BETA7 TARGETING MOLECULE COMPOSITIONS FOR THE TREATMENT GASTROINTESTINAL INFLAMMATORY DISEASE Non-Final OA Paragon Therapeutics, Inc.
16981168 CELLULAR SIGNALING DOMAIN ENGINEERING IN CHIMERIC ANTIGEN RECEPTOR-MODIFIED REGULATORY T CELLS Final Rejection THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18691685 COMPOSITIONS OF CHIMERIC ANTIGEN RECEPTOR (CAR) SIGNALING MOLECULES AND USES THEREOF Non-Final OA The Board of Trustees of the Leland Stanford Junior University
18491633 METHODS AND COMPOSITIONS FOR ADOPTIVE CELL THERAPY Final Rejection Juno Therapeutics, Inc.
17588149 METHODS AND COMPOSITIONS FOR ADOPTIVE CELL THERAPY Non-Final OA Juno Therapeutics, Inc.
18169293 AMHR2-ED CANCER VACCINE FORMULATIONS Final Rejection The Cleveland Clinic Foundation
17775063 ENGINEERING CHARGE PAIR MUTATIONS FOR PAIRING OF HETERO-IgG MOLECULES Final Rejection AMGEN INC.
18164304 TREATMENT OF ACUTE LYMPHOBLASTIC LEUKEMIA Non-Final OA AMGEN RESEARCH (MUNICH) GMBH
18066972 CROSS-SPECIES-SPECIFIC BINDING DOMAIN Non-Final OA Amgen Research (Munich) GmbH
18689483 CD28 SHEDDING BLOCKING AGENTS Non-Final OA BIOND BIOLOGICS LTD.

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Frequently Asked Questions

What is examiner Bradley Duffy's allowance rate?

54.4% of resolved applications examined by Bradley Duffy were allowed (754 resolved cases), compared with 48.8% across Art Unit 1638 over the last five years.

Does an interview help with examiner Bradley Duffy?

This examiner's interview lift is +46.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Bradley Duffy take to allow a patent?

Applications allowed by Bradley Duffy took 1,361 days on average from filing to allowance.

Which art unit does examiner Bradley Duffy work in?

Bradley Duffy examines applications in Art Unit 1638 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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