Prosecution Insights
Last updated: May 29, 2026

Examiner: SZPERKA, MICHAEL EDWARD

Tech Center 1600 • Art Units: 1641 1644

This examiner grants 62% of resolved cases

Performance Statistics

62.5%
Allow Rate
+2.5% vs TC avg
974
Total Applications
+37.6%
Interview Lift
1120
Avg Prosecution Days
Based on 941 resolved cases, 2023–2026

Rejection Statute Breakdown

2.7%
§101 Eligibility
11.0%
§102 Novelty
26.8%
§103 Obviousness
18.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18249991 NATURAL KILLER CELLS WITH ENHANCED ACTIVITY Non-Final OA The Regents of the University of California
18048386 THERAPIES AND METHODS TO TREAT TLR2-MEDIATED DISEASES AND DISORDERS Final Rejection The Regents of the University of California
18242868 FACTOR X BINDERS ENHANCING FX ACTIVATION Final Rejection Novo Nordisk A/S
18060215 COMPOSITIONS AND METHODS FOR PURIFYING ALPHA-1 ANTITRYPSIN USING PEPTIDE LIGANDS Non-Final OA North Carolina State University
19230637 ANTICOAGULANT PROTEINS AND THEIR USE FOR TREATING DISEASES ASSOCIATED WITH THE ACTIVATION OF NEUTROPHILS Non-Final OA BIOXODES
17868422 SYSTEMS AND METHODS FOR MONITORING PLATELET ACTIVATION Final Rejection The Regents of the University of Michigan
18034999 CHIMERIC ANTIGEN RECEPTOR Non-Final OA National University Corporation Tokai National Higher Education and Research System
16646577 MULTICELLULAR TARGETING LIPOSOME Non-Final OA SHANGHAI JIAO TONG UNIVERSITY
18018936 DOSAGE AND ADMINISTRATION OF ANTI-C5 ANTIBODIES FOR TREATING HEMATOPOIETIC STEM CELL TRANSPLANT-ASSOCIATED THROMBOTIC MICROANGIOPATHY (HSCT-TMA) Non-Final OA Alexion Pharmaceuticals, Inc.
17784025 METHODS OF TREATING PREGNANCY-ASSOCIATED ATYPICAL HEMOLYTIC UREMIC SYNDROME USING AN ANTI-C5 ANTIBODY Non-Final OA Alexion Pharmaceuticals, Inc.
18250106 COMBINATION VACCINE FOR PROTECTING SWINE AGAINST VARIOUS DISORDERS Non-Final OA Intervet Inc.
18030901 THERAPEUTIC AGENT FOR IMMUNE/INFLAMMATORY DISEASE Non-Final OA Takeda Pharmaceutical Company Limited
17284291 METHOD FOR PRODUCING ANTIBODY-DRUG CONJUGATE Final Rejection TAKEDA PHARMACEUTICAL COMPANY LIMITED
18452155 METHODS FOR PREVENTING OR TREATING ALLERGY BY ADMINISTERING AN IL-4R ANTAGONIST Final Rejection SANOFI BIOTECHNOLOGY
18148888 COMPOSITIONS AND METHODS FOR TREATING ALLOGRAFT VASCULOPATHY, MOYAMOYA DISEASE, MOYAMOYA SYNDROME AND INTIMAL PROLIFERATION Non-Final OA Westfälische Wilhelms-Universität Münster
18246423 Recombinant Fusion Proteins Comprising Interleukin-18-Binding Protein and Antigen Binding Fragment to Serum Albumin, and Compositions and Uses Thereof Non-Final OA Aprilbio Co., Ltd.
18022096 Fusion proteins for the diagnosis, prophylaxis and treatment of infectious diseases Non-Final OA Vitruviae LLC

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