Prosecution Insights
Last updated: October 02, 2026

Examiner: PETRASH, HILARY ANN

Tech Center 1600 • Art Units: 1641 1644

This examiner grants 64% of resolved cases

Analysis

Hilary Ann Petrash is an examiner in Tech Center 1600 and Art Unit 1641. There are 62 resolved cases associated with this profile. These 62 cases provide the data for the allowance and pendency metrics.

The allowance rate is 64.5%. This 64.5% rate indicates the frequency of allowances among the resolved cases. The median days to allowance is 1155. This 1155-day figure is the median time taken to reach a grant.

The interview lift is 51.7%. This 51.7% lift shows the increase in allowance probability when an interview is held. For practitioners in Art Unit 1641, the 1155-day median pendency is a factor in planning. The 64.5% allowance rate and the 51.7% interview lift are relevant for determining whether to request an interview. Direct communication with the examiner in Tech Center 1600 is a tactical option. The 62 resolved cases establish the statistical context for these prosecution trends.

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

Performance Statistics

64.5%
Allow Rate
+4.5% vs TC avg
94
Total Applications
+51.7%
Interview Lift
1155
Avg Prosecution Days
Based on 62 resolved cases, 2023–2026

Rejection Statute Breakdown

3.3%
§101 Eligibility
13.2%
§102 Novelty
24.8%
§103 Obviousness
33.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18509777 Compositions And Methods Of MAIT Cell Activation Non-Final OA ImmunityBio, Inc.
17539926 THERAPEUTIC AGENT OR PROPHYLACTIC AGENT FOR DEMENTIA Final Rejection TEIJIN PHARMA LIMITED
18753316 ANTIBODY MOLECULES AND CONJUGATES Non-Final OA ASTRAZENECA AB
17637305 INTERCELLULAR ADHESION MOLECULE 1 (ICAM1) ANTIBODY DRUG CONJUGATE AND USES THEREOF Final Rejection Children's Medical Center Corporation
17491813 EVALUATION AND TREATMENT OF BRADYKININ-MEDIATED DISORDERS Final Rejection Takeda Pharmaceutical Company Limited
18910550 ANTIBODY-DRUG CONJUGATE AND APPLICATION THEREOF Non-Final OA KEYMED BIOSCIENCES CO., LTD
18036289 COMBINATION OF ANTIBODY-DRUG CONJUGATE WITH ANTI-SIRPalpha ANTIBODY Non-Final OA DAIICHI SANKYO COMPANY, LIMITED
18682886 METHODS FOR TREATING NON-MUSCLE INVASIVE BLADDER CANCER (NMIBC) WITH ANTIBODY DRUG CONJUGATES (ADC) THAT BIND TO 191P4D12 PROTEINS Non-Final OA SEAGEN INC.

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