Prosecution Insights
Last updated: October 27, 2026

Lioubov G Korotchkina, USPTO Patent Examiner

Listed by the USPTO as KOROTCHKINA, LIOUBOV G

Tech Center 1700 • Art Units: 1653 1656 1796 1797

This examiner grants 29% of resolved cases

Analysis

KOROTCHKINA, LIOUBOV G handles cases in tech center 1700 and art unit 1653. Her profile includes 62 resolved cases, an allowance rate of 29.0%, and a median of 1362 days to allowance. The allowance rate indicates that allowance was relatively infrequent, and the median reflects extended prosecution timing. The limited case volume also narrows the basis for generalizing from the record.

The interview lift is 64.1%, showing a strong positive association between interviews and allowance. Practitioners may consider interviews a central part of response planning, while preserving a clear written account of the agreed or disputed claim issues. The listed companies are BASF SE, CJ CheilJedang Corporation, and Wisconsin Alumni Research Foundation. The associated firms are Knobbe, Martens, Olson & Bear, LLP, SZDC Law P.C., and ARENTFOX SCHIFF LLP.

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

Performance Statistics

29.0%
Allow Rate
-36.0% vs TC avg
120
Total Applications
+64.1%
Interview Lift
1362
Avg Prosecution Days
Based on 62 resolved cases, 2023–2026

Rejection Statute Breakdown

3.9%
§101 Eligibility
11.0%
§102 Novelty
45.4%
§103 Obviousness
29.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18856370 METHOD FOR PRODUCING LACTIC ACID BACTERIA ENTRAPPED IN CALCIUM-ALGINATE BEADS Non-Final OA CJ CHEILJEDANG CORPORATION
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
17432204 INDUSTRIAL FERMENTATION PROCESS FOR BACILLUS USING DEFINED MEDIUM AND MAGNESIUM FEED Non-Final OA BASF SE
17126348 DRYING FORMULATION FOR HYDROGEL MICROCARRIERS Non-Final OA CORNING INCORPORATED
18875309 BUTANOL PRODUCTION METHOD Non-Final OA NIPPON SHOKUBAI CO., LTD.
17925662 Agent for Increasing Content of IgA Antibody in Milk Non-Final OA THE UNIVERSITY OF TOKYO
16484869 Method of Making Proteins with Non-Standard Amino Acids Non-Final OA President and Fellows of Harvard College
17617567 GEL COMPOSITION COMPRISING VIABLE MICROORGANISMS Final Rejection L'Oreal S.A.
18350982 METHOD FOR PRODUCING PHYTOSPHINGOSINE OR PHYTOCERAMIDE Non-Final OA DANSTAR FERMENT AG
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
18253956 METHOD FOR COLLECTING CELLS OF MICROORGANISM IN SPECIMEN Non-Final OA KABUSHIKI KAISHA YAKULT HONSHA

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Frequently Asked Questions

What is examiner Lioubov G Korotchkina's allowance rate?

29.0% of resolved applications examined by Lioubov G Korotchkina were allowed (62 resolved cases), compared with 23.5% across Art Unit 1653 over the last five years.

Does an interview help with examiner Lioubov G Korotchkina?

This examiner's interview lift is +64.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Lioubov G Korotchkina take to allow a patent?

Applications allowed by Lioubov G Korotchkina took 1,362 days on average from filing to allowance.

Which art unit does examiner Lioubov G Korotchkina work in?

Lioubov G Korotchkina examines applications in Art Unit 1653 in Tech Center 1700 (Chemistry & Materials).

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