Prosecution Insights
Last updated: October 02, 2026

Examiner: HALVORSON, MARK

Tech Center 1600 • Art Units: 1600 1623 1642 1646

This examiner grants 48% of resolved cases

Analysis

Mark Halvorson is an examiner in Tech Center 1600, assigned to Art Unit 1623. With 813 resolved cases, there is a significant volume of data to inform prosecution strategies. The examiner's allowance rate is 47.8 percent, which indicates that less than half of the applications result in a patent grant. This 47.8 percent rate suggests a rigorous examination process in Art Unit 1623, where applicants must be prepared for substantive rejections.

The median days to allowance is 1325, pointing to a long duration for successful applications. This 1325-day timeline means that practitioners should expect a multi-year process when seeking an allowance. The data also highlights an interview lift percentage of 20.8. This 20.8 percent lift indicates that interviews are quite effective, providing a substantial boost to the probability of allowance. Given the 47.8 percent baseline allowance rate, the 20.8 percent lift suggests that verbal communication can help bridge gaps in the written record. For those operating in Tech Center 1600, understanding the 1325-day median pendency and the value of interviews is essential for managing client expectations and achieving favorable outcomes.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

47.9%
Allow Rate
-12.1% vs TC avg
854
Total Applications
+20.7%
Interview Lift
1325
Avg Prosecution Days
Based on 814 resolved cases, 2023–2026

Rejection Statute Breakdown

9.5%
§101 Eligibility
14.8%
§102 Novelty
36.6%
§103 Obviousness
28.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18933358 BIOMARKERS AND METHODS OF TREATING PD-1 AND PD-L1 RELATED CONDITIONS Non-Final OA Genentech, Inc.
14701912 RNA-Guided Human Genome Engineering Final Rejection PRESIDENT AND FELLOWS OF HARVARD COLLEGE
14681510 RNA-Guided Human Genome Engineering Final Rejection President and Fellows of Harvard College
14318933 RNA-Guided Human Genome Engineering Final Rejection President and Fellows of Harvard College
17625264 Methods of Enhancing Immunogenicity of Cancers Final Rejection The Board of Trustees of the Leland Stanford Junior University
18501865 CALCIUM VOLTAGE-GATED CHANNEL AUXILIARY SUBUNIT GAMMA 1 (CACNG1) BINDING PROTEINS AND CACNG1-MEDIATED DELIVERY TO SKELETAL MUSCLE Non-Final OA Regeneron Pharmaceuticals, Inc.
17734688 BIOCHEMICAL ASSAYS FOR THERAPEUTIC PROTEINS Final Rejection Regeneron Pharmaceuticals, Inc.
16094786 IMPROVED HLA EPITOPE PREDICTION Final Rejection The General Hospital Corporation
18062937 PREDICTION AND TREATMENT OF IMMUNOTHERAPEUTIC TOXICITY Final Rejection The Board of Regents of The University of Texas System
16643607 Radioluminescent Nanoparticles for Radiation-Triggered Controlled Release Drugs Final Rejection PURDUE RESEARCH FOUNDATION
17910637 A Combined Inhibition of EGFR and NRF2 in The Treatment of Malignant Glioma Final Rejection United States Government as represented by the Department of Veterans Affairs
18363747 SERUM ALBUMIN-BASED FUSION PROTEIN, AND NANO-ASSEMBLY, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF Non-Final OA SOUTH CHINA UNIVERSITY OF TECHNOLOGY
18452985 ANTI-TIGIT ANTIBODIES, ANTI-PVRIG ANTIBODIES AND COMBINATIONS THEREOF Non-Final OA Compugen Ltd.

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