Prosecution Insights
Last updated: May 29, 2026

Examiner: SIFFORD, JEFFREY MARK

Tech Center 1600 • Art Units: 1648 1653 1671

This examiner grants 58% of resolved cases

Performance Statistics

57.6%
Allow Rate
-2.4% vs TC avg
123
Total Applications
+32.9%
Interview Lift
1208
Avg Prosecution Days
Based on 85 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
7.3%
§102 Novelty
60.6%
§103 Obviousness
10.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18151174 NIPAH VIRUS ENVELOPE PSEUDOTYPED LENTIVIRUSES AND METHODS OF THEIR USE Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18022056 ADENO-ASSOCIATED VIRUS COMPOSITIONS HAVING PREFERRED EXPRESSION LEVELS Non-Final OA California Institute of Technology
17412900 Stable Reporter Flavivirus Non-Final OA Board of Regents, the University of Texas System
17296829 T Cell-Directed Anti-Cancer Vaccines Against Commensal Viruses Non-Final OA The General Hospital Corporation
17919997 COMPOSITIONS AND METHODS FOR FORMATION AND SECRETION OF EXTRACELLULAR VESICLES AND AAV PARTICLES Non-Final OA DUKE UNIVERSITY
17791981 SYSTEM AND METHOD FOR PROCESSING VIRUS PREPARATIONS TO REDUCE HETEROGENEITY Non-Final OA THE TRUSTEES OF INDIANA UNIVERSITY
17393824 METHODS AND KITS FOR DETECTING SARS-COV-2 PROTEIN IN A SAMPLE Final Rejection Abbott Laboratories
17911367 KIR 7.1 GENE THERAPY VECTORS AND METHODS OF USING THE SAME Non-Final OA Wisconsin Alumni Research Foundation
18817094 Rhinovirus Vaccine Non-Final OA IP2IPO INNOVATIONS LIMITED
18345478 ANTI-SARS-COV-2 ANTIGEN BINDING POLYPEPTIDES, POLYPEPTIDE COMPLEXES AND METHODS OF USE THEREOF Non-Final OA The United States of America, As Represented by the Secretary, Dept. of Health and Human Services
17919065 ADENOVIRUS IMMUNOASSAY METHOD AND IMMUNOASSAY INSTRUMENT Final Rejection Denka Company Limited
18548708 CAPILLARY ELECTROPHORESIS METHODS FOR QUANTIFYING VIRAL SPECIES Non-Final OA DH Technologies Development Pte. Ltd.
17767532 PRODUCTION METHOD AND DETECTION METHOD OF AFRICAN SWINE FEVER VIRUS Final Rejection National Agriculture and Food Research Organization
17416810 NOROVIRUS VACCINE FORMULATIONS AND METHODS Non-Final OA TAKEDA VACCINES, INC.
17274016 DENGUE VACCINE UNIT DOSE AND ADMINISTRATION THEREOF Final Rejection Takeda Vaccines, Inc.
17633063 CELLULAR COMPOSITIONS COMPRISING VIRAL VECTORS AND METHODS OF TREATMENT Final Rejection Mesoblast International Sárl
18011742 METHOD FOR PREPARING ADENOVIRUS VECTOR VACCINE BY MEANS OF PERFUSION CULTURE PROCESS Non-Final OA CANSINO BIOLOGICS INC.
18007823 ENHANCED PURIFICATION OF ADENO-ASSOCIATED VIRUS TO MORE EFFECTIVELY REMOVE CONTAMINATING DNA Non-Final OA Sartorius BIA Separations d.o.o.
17800592 A METHOD FOR SEPARATION OR DEPLETION OF EMPTY AAV CAPSIDS FROM FULL AAV CAPSIDS Non-Final OA Sartorius BIA Separations d.o.o.
18058403 ANTIGENIC DETERMINANTS PROTECTIVE IMMUNITY, SERODIAGNOSTIC AND MULTIVALENT SUBUNITS PRECISION VACCINE AGAINST SARS-CoV-2 Non-Final OA ARABIAN GULF UNIVERSITY
17948868 DUAL BIFUNCTIONAL VECTORS FOR AAV PRODUCTION Final Rejection uniQure biopharma B.V.
17736181 ENGINEERED BACTERIOPHAGE T4 NANOPARTICLES AS A POTENTIAL TARGETED ACTIVATOR OF HIV-1 LATENCY IN CD4+ HUMAN T-CELLS Final Rejection The Catholic University of America
17627162 USE OF ION CONCENTRATIONS TO INCREASE THE PACKAGING EFFICIENCY OF RECOMBINANT ADENO-ASSOCIATED VIRUS Final Rejection CHARLES RIVER LABORATORIES, INC.

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