Prosecution Insights
Last updated: May 29, 2026

Examiner: BRANCH, CATHERINE S

Tech Center 1700 • Art Units: 1763 1787

This examiner grants 85% of resolved cases

Performance Statistics

85.4%
Allow Rate
+20.4% vs TC avg
973
Total Applications
+3.5%
Interview Lift
853
Avg Prosecution Days
Based on 947 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
10.2%
§102 Novelty
58.2%
§103 Obviousness
21.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18248831 STORAGE METHOD AND USAGE METHOD FOR POLYCARBOXYLIC ACID-BASED POLYMER SOLUTION Non-Final OA NIPPON SHOKUBAI CO., LTD.
18037209 SOLUTION PROCESS FOR PRODUCTION OF FUNCTIONALIZED POLYOLEFINS Non-Final OA SABIC GLOBAL TECHNOLOGIES B.V.
17865049 METHOD FOR PRODUCING LOW MOLECULAR WEIGHT POLYTETRAFLUOROETHYLENE, COMPOSITION, AND LOW MOLECULAR WEIGHT POLYTETRAFLUOROEHTYLENE Non-Final OA OSAKA UNIVERSITY
18250245 Non-Aromatic Hydrocarbon Soluble Olefin Polymerization Catalysts and Use Thereof Final Rejection ExxonMobil Chemical Patents Inc.
18015189 REAGENT COMPOSITION FOR DETECTING ILLICIT DRUGS AND SHEET KIT FOR DETECTING ILLICIT DRUGS COMPRISING SAME Non-Final OA KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
17997143 CATALYST COMPONENT FOR OLEFIN POLYMERIZATION OR COPOLYMERIZATION AND PREPARATION METHOD THEREFOR, AND APPLICATION Non-Final OA BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION
18250551 SOLID COMPONENT FOR PREPARING OLEFIN POLYMERIZATION CATALYST, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF Non-Final OA BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION

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