Prosecution Insights
Last updated: October 02, 2026

Examiner: KOROTCHKINA, LIOUBOV G

Tech Center 1700 • Art Units: 1653 1656 1796 1797

This examiner grants 30% of resolved cases

Analysis

Lioubov G. Korotchkina is an examiner in Tech Center 1700 and Art Unit 1653. She has resolved 61 cases, providing a picture of her examination tendencies. Her allowance rate is 29.5 percent, suggesting a challenging prosecution environment for applicants.

The interview lift for this examiner is 67.7 percent, which is a high increase. This suggests that interviews are effective in Art Unit 1653 for resolving outstanding issues and securing an allowance. Given the 29.5 percent baseline, the 67.7 percent lift is an incentive for practitioners to schedule an interview early in the process.

The median days to allowance is 1364, representing the typical pendency for cases that reach issuance. This 1364-day timeline is a standard expectation for applicants in Tech Center 1700. With 61 resolved cases, the 29.5 percent allowance rate and the 67.7 percent lift are the relevant figures for developing a prosecution strategy.

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

Performance Statistics

29.5%
Allow Rate
-35.5% vs TC avg
116
Total Applications
+67.7%
Interview Lift
1364
Avg Prosecution Days
Based on 61 resolved cases, 2023–2026

Rejection Statute Breakdown

3.8%
§101 Eligibility
10.4%
§102 Novelty
46.7%
§103 Obviousness
28.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18327714 Bead-Enabled, Efficient, and Rapid Multi-Omic Sample Preparation for Mass Spectrometry Analysis Non-Final OA Wisconsin Alumni Research Foundation
17786864 INCREASING SPACE-TIME-YIELD, CARBON-CONVERSION-EFFICIENCY AND CARBON SUBSTRATE FLEXIBILITY IN THE PRODUCTION OF FINE CHEMICALS Non-Final OA BASF SE
17605919 BETA-AMYLASE VARIANTS Non-Final OA BASF SE
16484869 Method of Making Proteins with Non-Standard Amino Acids Non-Final OA President and Fellows of Harvard College
17126348 DRYING FORMULATION FOR HYDROGEL MICROCARRIERS Non-Final OA CORNING INCORPORATED
17925662 Agent for Increasing Content of IgA Antibody in Milk Non-Final OA THE UNIVERSITY OF TOKYO
17617567 GEL COMPOSITION COMPRISING VIABLE MICROORGANISMS Final Rejection L'Oreal S.A.
17612816 COMPOSITION FOR TREATMENT, ALLEVIATION OR PROPHYLAXIS OF ACNE Final Rejection L'Oreal S.A.
18001117 PROCESS FOR SYNTHESIS OF POLY-GAMMA-GLUTAMIC ACID Non-Final OA COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
17299261 Low pH Powder Detergent Composition Non-Final OA Novozymes A/S
17793009 4-UREIDO-5-CARBOXYL-IMIDAZOLE-AMIDE HYDROLASE AND USE THEREOF Non-Final OA TIANJIN UNIVERSITY
17924704 THERMOSTABLE GLUCOCEREBROSIDASE Non-Final OA TEIKYO UNIVERSITY
18277440 COMPOSITION FOR GUT HEALTH Final Rejection DUPONT NUTRITION BIOSCIENCES APS
17642697 A NEW, NON-SPECIFIC THERMOLABILE NUCLEASE ACTIVE AT LOW TEMPERATURE, IN WIDE PH RANGE AND HIGH CONCENTRATION IN SALTS Non-Final OA Blirt S.A.

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