Prosecution Insights
Last updated: May 29, 2026

Examiner: PUTTLITZ, KARL J

Tech Center 1600 • Art Units: 1621 1642 1646 1671

This examiner grants 69% of resolved cases

Performance Statistics

69.1%
Allow Rate
+9.1% vs TC avg
1,472
Total Applications
+18.4%
Interview Lift
928
Avg Prosecution Days
Based on 1412 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
8.5%
§102 Novelty
42.3%
§103 Obviousness
12.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18237210 SITE-SPECIFIC QUANTITATION OF DRUG CONJUGATIONS Non-Final OA Regeneron Pharmaceuticals, Inc.
19097573 ANTIBODY-OLIGONUCLEOTIDE CONJUGATE COMPOSITIONS AND METHODS OF INDUCING DMD EXON 50 SKIPPING Final Rejection Avidity Biosciences, Inc.
19078822 PROTEOLYSIS TARGETING CHIMERA (PROTAC) COMPOSITIONS USING UBIQUITIN CONJUGATING ENZYME LIGANDS Non-Final OA BPGbio, Inc.
17926188 IDENTIFICATION OF HLA-RESTRICTED PRAME PEPTIDE EPITOPES, PRAME-SPECIFIC T CELLS SUITABLE FOR "OFF-THE-SHELF" TREATMENT OF CANCER EXPRESSING PRAME Final Rejection Children's National Medical Center
18342898 MULTIFUNCTIONAL IMMUNE CELL THERAPIES Final Rejection Arcellx, Inc.
17818526 CYCLOPHOSPHAMIDE ANALOGS FOR USE AS IMMUNOGENS AND ASSAY CONJUGATES FOR AN IMMUNOASSAY OF CYCLOPHOSPHAMIDE AND IFOSFAMIDE Non-Final OA Becton, Dickinson and Company
17887341 SCALABLE AND FACILE CELL-MEMBRANE-COATING TECHNOLOGY FOR BOTH POSITIVELY AND NEGATIVELY CHARGED PARTICLES Final Rejection THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
18044274 CpG IMMUNOCONJUGATES FOR CANCER THERAPY Non-Final OA University of Southern California
17918947 OLIGONUCLEOTIDE CONJUGATES AND PREPARATION AND APPLICATIONS THEREOF Non-Final OA ACADEMIA SINICA
18272050 ANTI-DLL3 ANTIBODY-DRUG CONJUGATE Non-Final OA DAIICHI SANKYO COMPANY, LIMITED
17759139 VACCINATION AGAINST ANTIGENS INDUCED IN PATHOGEN-INFECTED CELLS Non-Final OA University of Miami
18447808 LUNG CANCER COMBINATION THERAPY WITH IL-2 CONJUGATES AND AN ANTI-PD-1 ANTIBODY OR ANTIGEN-BINDING FRAGMENT THEREOF Non-Final OA MSD INTERNATIONAL GMBH
18331966 NEUTRALIZATION OF INHIBITORY PATHWAYS IN LYMPHOCYTES Non-Final OA INNATE PHARMA
17793005 ANTI-TROP-2 ANTIBODY-EXATECAN ANALOG CONJUGATE AND MEDICAL USE THEREOF Non-Final OA SHANGHAI HENGRUI PHARMACEUTICAL CO., LTD.
17596239 ANTI-B7-H4 ANTIBODY-DRUG CONJUGATE AND MEDICINAL USE THEREOF Final Rejection Jiangsu Hansoh Pharmaceutical Group Co., Ltd.
17957302 AXL-SPECIFIC ANTIBODY-DRUG CONJUGATES FOR CANCER TREATMENT Non-Final OA GENMAB A/S
18282696 ENGINEERED IMMUNE CELLS AND USES THEREOF Non-Final OA Nanjing Legend Biotech Co., Ltd.
16964965 ANTIBODY-DRUG CONJUGATES THAT TARGET DLK1 AND USES THEREOF Non-Final OA Y-Biologics, Inc.
18001374 TREATMENT OF DISEASES CHARACTERIZED BY OVEREXPRESSION OF ERYTHROPOIETIN-PRODUCING HEPATOCELLULAR RECEPTOR A2 (EPHA2) Non-Final OA BicycleTx Limited
18258343 Therapeutic RNA for Treating Cancer Non-Final OA BioNTech SE
18252818 PHARMACEUTICAL FORMULATION Non-Final OA AstraZeneca UK Limited
18254941 ANTI-SIRPalpha ANTIBODY OR ANTIGEN-BINDING FRAGMENT THEREOF, AND USE THEREOF Non-Final OA QURE BIOTECHNOLOGY (SHANGHAI) CO., LTD.
18036142 NEW TYPE II COLLAGEN BINDING PROTEINS Non-Final OA Navigo Proteins GmbH
18247056 PREPARATION METHOD FOR BIS-SUBSTITUTED BRIDGING ANTIBODY-DRUG CONJUGATE Non-Final OA JIANGSU MABWELL HEALTH PHARMACEUTICAL R&D CO., LTD.
18012710 CONJUGATE OF SAPONIN AND SINGLE-DOMAIN ANTIBODY, PHARMACEUTICAL COMPOSITION COMPRISING SAID CONJUGATE, THERAPEUTIC USE THEREOF Final Rejection SAPREME TECHNOLOGIES B.V.
18087678 METHODS FOR THE PREPARATION OF LINKER PAYLOAD CONSTRUCTS Non-Final OA SYNAFFIX B.V.
17812160 CONJUGATES OF ANTIBODIES AND IMMUNE CELL ENGAGERS Non-Final OA SYNAFFIX B.V.
18156709 CONJUGATE OF A TUBULYSIN ANALOG WITH BRANCHED LINKERS Non-Final OA Hangzhou DAC Biotech Co., Ltd.
17622360 A CONJUGATE OF A CYTOTOXIC AGENT TO A CELL BINDING MOLECULE WITH BRANCHED LINKERS Non-Final OA Hangzhou DAC Biotech Co., Ltd
18062494 DRUG CONJUGATES COMPRISING ANTIBODIES AGAINST CLAUDIN 18.2 Non-Final OA TRON-Translational Onkologie an der Universitatsmedizin der Johannes Gutenberg-Universitat Mainz

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