Prosecution Insights
Last updated: August 18, 2026

Examiner: SIFFORD, JEFFREY MARK

Tech Center 1600 • Art Units: 1648 1653 1671

This examiner grants 56% of resolved cases

Performance Statistics

55.7%
Allow Rate
-4.3% vs TC avg
133
Total Applications
+32.1%
Interview Lift
1221
Avg Prosecution Days
Based on 88 resolved cases, 2023–2026

Rejection Statute Breakdown

7.4%
§101 Eligibility
14.8%
§102 Novelty
32.9%
§103 Obviousness
29.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18151174 NIPAH VIRUS ENVELOPE PSEUDOTYPED LENTIVIRUSES AND METHODS OF THEIR USE Final Rejection THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18552167 Compositions, kits, and methods for anti-microbial serology assays using anti-human immunoglobulin antibody Non-Final OA Siemens Healthcare Diagnostics Inc.
18022056 ADENO-ASSOCIATED VIRUS COMPOSITIONS HAVING PREFERRED EXPRESSION LEVELS Non-Final OA California Institute of Technology
17296829 T Cell-Directed Anti-Cancer Vaccines Against Commensal Viruses Non-Final OA The General Hospital Corporation
18548708 CAPILLARY ELECTROPHORESIS METHODS FOR QUANTIFYING VIRAL SPECIES Non-Final OA DH Technologies Development Pte. Ltd.
17802443 METHOD FOR REMOVING HOST CELL DNA FROM VIRUS PREPARATION Non-Final OA Takeda Vaccines, Inc.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month