Prosecution Insights
Last updated: October 27, 2026

Ilia I Ouspenski, USPTO Patent Examiner

Listed by the USPTO as OUSPENSKI, ILIA I

Tech Center 3700 • Art Units: 1644 3792

This examiner grants 77% of resolved cases

Analysis

OUSPENSKI, ILIA I is assigned to Tech Center 3700 and Art Unit 1644. The record includes 1129 resolved cases, with an allowance rate of 77.3%. The median time to allowance is 974 days. Interview lift is 20.6%, indicating a positive association between interviews and allowance outcomes in the recorded cases.

The listed companies are Cancer Research Technology Limited, Instil Bio (Uk) Limited, and Biomolecular Holdings LLC. The firms are FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, FISH & RICHARDSON P.C. (TC), and FOLEY & LARDNER LLP. Practitioners may use interviews as one component of prosecution strategy, while planning around the reported allowance rate and median duration.

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

Performance Statistics

77.3%
Allow Rate
+7.3% vs TC avg
1,186
Total Applications
+20.6%
Interview Lift
974
Avg Prosecution Days
Based on 1129 resolved cases, 2023–2026

Rejection Statute Breakdown

3.8%
§101 Eligibility
20.5%
§102 Novelty
9.5%
§103 Obviousness
38.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18699108 ENGINEERED CYTOKINE RECEPTORS FOR TUNABLE ADOPTIVE CELL THERAPY Non-Final OA Dana-Farber Cancer Institute, Inc.
18317241 ANTI-LAG3 ANTIBODIES AND USES THEREOF Final Rejection Regeneron Pharmaceuticals, Inc.
18326373 METHODS FOR TREATING HEMATOLOGIC CANCERS Non-Final OA The Medical College of Wisconsin, Inc.
18640092 COMPOSITIONS AND METHODS OF PHOSPHOLIPASE A2 RECEPTOR CHIMERIC AUTOANTIBODY RECEPTOR T CELLS Non-Final OA The Trustees of the University of Pennsylvania
18643334 MODIFIED IMMUNOGLOBULINS Non-Final OA Biocytogen Pharmaceuticals (Beijing) Co., Ltd.

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Frequently Asked Questions

What is examiner Ilia I Ouspenski's allowance rate?

77.3% of resolved applications examined by Ilia I Ouspenski were allowed (1,129 resolved cases), compared with 35.9% across Art Unit 1644 over the last five years.

Does an interview help with examiner Ilia I Ouspenski?

This examiner's interview lift is +20.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Ilia I Ouspenski take to allow a patent?

Applications allowed by Ilia I Ouspenski took 974 days on average from filing to allowance.

Which art unit does examiner Ilia I Ouspenski work in?

Ilia I Ouspenski examines applications in Art Unit 1644 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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