Prosecution Insights
Last updated: October 02, 2026

Examiner: TCHERKASSKAYA, OLGA V

Tech Center 1600 • Art Units: 1615

This examiner grants 55% of resolved cases

Analysis

Olga V. Tcherkasskaya works in Tech Center 1600 and Art Unit 1615. The examiner has 845 resolved cases and an allowance rate of 55.4 percent. A standout figure is the interview lift of 46.2 percent, which is a significant increase in the probability of allowance. This suggests that interviews are a vital component for success with this examiner. Practitioners should prioritize scheduling an interview to navigate the 979-day median pendency.

The 55.4 percent allowance rate provides a baseline for applications in Art Unit 1615. While this rate is moderate, the 46.2 percent interview lift offers a clear path forward for the 845 cases handled. The median days to allowance of 979 reflects the typical prosecution cycle. Direct communication can be used to address rejections and move toward a grant. The data indicates that verbal engagement is highly effective for applications assigned to this docket in Tech Center 1600.

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

Performance Statistics

55.4%
Allow Rate
-4.6% vs TC avg
894
Total Applications
+46.2%
Interview Lift
979
Avg Prosecution Days
Based on 845 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
7.2%
§102 Novelty
35.5%
§103 Obviousness
37.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
16707580 ORAL PRODUCT AND METHOD OF MANUFACTURE Non-Final OA NICOVENTURES TRADING LIMITED
19371866 FORMULATIONS COMPRISING INOSITOL, SILICATES, AND OPTIONALLY AMINO ACIDS WITH IMPROVED SOLUBILITY AND METHODS OF MAKING THE SAME Final Rejection Nutrition21, LLC
18683624 PATCH AND PRODUCTION METHOD THEREOF Final Rejection KANEKA CORPORATION
18860504 COMPOSITION FOR DYEING HAIR Non-Final OA LG H&H CO., LTD.
17284947 Softgels with solid or gel-like polymeric fill matrix Final Rejection Bayer HealthCare LLC
18870200 HERBICIDAL DERIVATIVES Non-Final OA SYNGENTA CROP PROTECTION AG
18849295 COMPOSITIONS AND METHODS FOR CONTROLLING INSECTS Non-Final OA SYNGENTA CROP PROTECTION AG
18549652 LIQUID VISCOELASTIC SWALLOWING AID TO PROMOTE SAFE SWALLOWING OF SOLID ORAL DOSAGE FORMS (SODF) Non-Final OA SOCIETE DES PRODUITS NESTLE S.A.
18456763 CHEWABLE DISSOLVABLE NICOTINE TABLET Final Rejection Altria Client Services LLC
19076661 STABLE PHARMACEUTICAL COMPOSITION OF AN AMINE DRUG Non-Final OA SUN PHARMACEUTICAL INDUSTRIES LIMITED
18199614 DRUG COMPOSITIONS AND METHODS OF PREPARING THE SAME Non-Final OA Applied Materials, Inc.
18853162 BIODEGRADABLE LIPIDOIDS AND COMPOSITIONS AND METHODS OF USE THEREOF FOR LIVER TARGETED DELIVERY Non-Final OA The Trustees of the University of Pennsylvania
18287244 CAPSULE FOR SPECIFIC DRUG DELIVERY AND PREPARATION METHOD THEREFOR Non-Final OA JIANGSU HENGRUI PHARMACEUTICALS CO., LTD.
18262938 ORAL SOLID DOSE FORMULATIONS Final Rejection GLAXOSMITHKLINE INTELLECTUAL PROPERTY DEVELOPMENT LIMITED
18861479 METHOD AND COMPOSITION FOR TREATING LUNG DISEASES Non-Final OA MannKind Corporation
18800988 ORAL FORMULATIONS OF CYTIDINE ANALOGS AND METHODS OF USE THEREOF Non-Final OA Celgene Corporation
18746814 PHARMACEUTICAL DOSAGE FORMS Final Rejection Purdue Pharma L.P.
18411193 Pharmaceutical Composition and Method for Improving Biomechanical Integrity of the Pelvic Floor Final Rejection Fempharma, LLC
17470994 METHODS AND SYSTEMS FOR FORMING MULTI-LAYERED PARTICLES Final Rejection Nulixir Inc.
18198266 Manufacturing Process for Metaxalone Tablets Non-Final OA Primus Pharmaceuticals, inc.
17773356 ORGANIC SELENIUM ENRICHED EDIBLE MARINE MICROALGAL BIOMASS Non-Final OA Council of Scientific and Industrial Research (An Indian Registered Body Incorporated Under The

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