Prosecution Insights
Last updated: October 02, 2026

Examiner: LEESER, ERICH A

Tech Center 1600 • Art Units: 1622 1624

This examiner grants 82% of resolved cases

Analysis

Erich A Leeser is an examiner in Tech Center 1600 and Art Unit 1622. With 966 resolved cases, the allowance rate is 81.8 percent. The interview lift is 13.3 percent, which is a moderate boost to the chances of allowance.

The median days to allowance is 766. This is an efficient timeline for the 966 resolved cases. The 81.8 percent allowance rate suggests a high probability of success. The 13.3 percent interview lift indicates that interviews are a helpful part of the process.

Practitioners should expect a 766-day median timeline for allowance. The allowance rate is a strong indicator of a favorable prosecution environment in Art Unit 1622. The interview lift across resolved cases shows that direct communication can provide a benefit. This data set suggests a highly efficient path to success.

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

Performance Statistics

81.8%
Allow Rate
+21.8% vs TC avg
984
Total Applications
+13.3%
Interview Lift
767
Avg Prosecution Days
Based on 969 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
23.6%
§102 Novelty
15.1%
§103 Obviousness
39.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19426142 PRMT5 INHIBITORS AND METHODS OF USE Non-Final OA SHANGHAI APEIRON THERAPEUTICS COMPANY LIMITED
18397327 NANOPARTICLES WITH ANTI-INFLAMMATORY PROPERTIES AND ENHANCED PENETRATION ACROSS THE BIOLOGICAL BARRIERS TO DELIVER ENCAPSULATED DRUGS Non-Final OA The Board of Trustees of The University of Alabama
18557991 COMPOSITION FOR PROMOTING BONE FORMATION OR TREATING BONE DISEASE BY ACTING ON OSTEOBLAST MITOCHONDRIA Non-Final OA SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
18543130 COMPOSITIONS CONTAINING BIS-ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE AND TITANIUM DIOXIDE Non-Final OA L'OREAL
18549158 Treatment of Breast Cancer with Amcenestrant and Palbociclib Non-Final OA Pfizer Inc.
18763484 INHIBITORS OF BRUTON'S TYROSINE KINASE AND METHODS OF THEIR USE Non-Final OA JANSSEN PHARMACEUTICA NV
18579114 BIFUNCTIONAL COMPOUNDS FOR DEGRADING BTK WITH DIMINISHED IMID ACTIVITY Final Rejection NURIX THERAPEUTICS, INC.
18409158 OLANZAPINE COMPOSITIONS AND METHODS OF USE Non-Final OA MEDINCELL SA

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