Prosecution Insights
Last updated: May 29, 2026

Examiner: DUFFY, BRADLEY

Tech Center 1600 • Art Units: 1643

This examiner grants 54% of resolved cases

Performance Statistics

54.4%
Allow Rate
-5.6% vs TC avg
778
Total Applications
+45.4%
Interview Lift
1365
Avg Prosecution Days
Based on 739 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
10.8%
§102 Novelty
41.1%
§103 Obviousness
21.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
16981168 CELLULAR SIGNALING DOMAIN ENGINEERING IN CHIMERIC ANTIGEN RECEPTOR-MODIFIED REGULATORY T CELLS Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
17775063 ENGINEERING CHARGE PAIR MUTATIONS FOR PAIRING OF HETERO-IgG MOLECULES Final Rejection AMGEN INC.
19277274 COMPOSITIONS AND METHODS RELATED TO POTENT CYTOTOXIC M-CENK CELLS FROM CD3/CD14-DEPLETED APHERESIS PRODUCTS Non-Final OA ImmunityBio, Inc.
17810287 ADA-RESPONSE SPECIFICATION ASSAY Final Rejection Hoffmann-La Roche Inc.
18260709 COMPOSITIONS AND METHODS RELATED TO IL2 RECEPTOR BINDING Non-Final OA Synthekine, Inc.
18169293 AMHR2-ED CANCER VACCINE FORMULATIONS Non-Final OA The Cleveland Clinic Foundation
17047993 COMPOSITIONS AND METHODS FOR TREATING MELANOMA WITH A CHIMERIC ANTIGEN RECEPTOR Non-Final OA THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
17915870 Antigen Binding Proteins to Class 5 ETEC Adhesins Non-Final OA United States of America as Represented by the Secretary of the Navy
17819745 PD-L1 ANTIBODIES BINDING CANINE PD-L1 Non-Final OA Intervet Inc.
18390978 TREATMENT OF AUTOIMMUNE DISEASES WITH ENGINEERED IMMUNE CELLS Non-Final OA Caribou Biosciences, Inc.
17818256 FGFR2 INHIBITORS ALONE OR IN COMBINATION WITH IMMUNE STIMULATING AGENTS IN CANCER TREATMENT Final Rejection FIVE PRIME THERAPEUTICS, INC.
18263753 MULTISPECIFIC ANTIBODIES HAVING SPECIFICITY FOR ROR1 AND CD3 Non-Final OA Numab Therapeutics AG
18255049 CD19-TARGETING HUMANIZED ANTIBODY AND USE THEREOF Non-Final OA BIOHENG THERAPEUTICS LIMITED
18329960 EXOSOME COMPRISING OVEREXPRESSED FC RECEPTOR OR PORTION THEREOF, AND METHOD FOR PREPARING SAME Non-Final OA EXOCOBIO INC
18164952 Covalent Diabodies and Uses Thereof Non-Final OA MacroGenics, Inc.
18023060 MODIFIED IMMUNE CELLS FOR FIBROSIS AND INFLAMMATION Non-Final OA Resolution Therapeutics Limited
18079858 COMPOSITION FOR OVERCOMING RESISTANCE TO EGFR-TARGETING AGENT Non-Final OA Pinetree Therapeutics, Inc.
17641520 RECOMBINANT IgG Fc MULTIMERS FOR THE TREATMENT OF IMMUNE COMPLEX-MEDIATED KIDNEY DISORDERS Final Rejection CSL BEHRING LENGNAU AG

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