Prosecution Insights
Last updated: October 27, 2026

Catherine S Branch, USPTO Patent Examiner

Listed by the USPTO as BRANCH, CATHERINE S

Tech Center 1700 • Art Units: 1745 1746 1763 1787

This examiner grants 86% of resolved cases

Analysis

BRANCH, CATHERINE S works in Tech Center 1700 and art unit 1745, with 965 resolved cases. The allowance rate is 85.7%, and the median time to allowance is 861 days. The interview lift is 3.5%, indicating a small positive association between interviews and allowance.

The listed companies are 3M Innovative Properties Company, Panasonic Holdings Corporation, and Kuraray Co., Ltd. The listed firms are Crowell, BUCHANAN, INGERSOLL & ROONEY PC, and C. Tumey Law Group, PLLC - Exxon. The extensive case history supports a well-developed profile for prosecution planning, while the interview measure suggests that written claim strategy may remain the primary focus.

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

Performance Statistics

85.7%
Allow Rate
+20.7% vs TC avg
998
Total Applications
+3.5%
Interview Lift
861
Avg Prosecution Days
Based on 965 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
19.4%
§102 Novelty
41.5%
§103 Obviousness
30.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18569971 FREE-RADICALLY POLYMERIZABLE COPOLYMER, FREE-RADICALLY POLYMERIZABLE COMPOSITION CONTAINING THE SAME, AND POLYMERIZED REACTION PRODUCT THEREFROM Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18277992 FILM MATERIAL AND LAMINATED MATERIAL Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18867873 COMPOSITION BASED ON (METH)ACRYLATE COMPOUNDS Non-Final OA Centre National De La Recherche Scientifique
18867216 RESIN COMPOSITION, CURED PRODUCT, LAMINATE, AND METHOD FOR PRODUCING LAMINATE Non-Final OA KURARAY CO., LTD.
18248831 STORAGE METHOD AND USAGE METHOD FOR POLYCARBOXYLIC ACID-BASED POLYMER SOLUTION Final Rejection NIPPON SHOKUBAI CO., LTD.
18864553 ADHESIVE SET, ADHESIVE BODY, AND MANUFACTURING METHOD THEREFOR Non-Final OA Resonac Corporation
18312729 MECHANICALLY STIMULATED MECHANOPHORES, POLYMERS THEREOF, METHODS OF PREPARATION THEREOF, AND SYSTEMS THEREOF FOR CONTROLLED EMISSION OF SMALL MOLECULES Non-Final OA The Board of Trustees of the University of Illinois
18005759 HYDROCARBYL-MODIFIED METHYLALUMINOXANE COCATALYST FOR BIS-PHENYLPHENOXY METAL-LIGAND COMPLEXES Non-Final OA Dow Global Technologies LLC
18729265 POLYFUNCTIONAL (METH)ACRYLATE THIOESTER COMPOSITION, CURABLE COMPOSITION, CURED PRODUCT, MOLDED BODY, OPTICAL MATERIAL, AND METHOD FOR PRODUCING POLYFUNCTIONAL (METH)ACRYLATE THIOESTER COMPOSITION Non-Final OA MITSUI CHEMICALS, INC.
18260201 PROCESSES FOR POLYMERIZING ONE OR MORE OLEFINS Non-Final OA ExxonMobil Chemical Patents Inc.

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Frequently Asked Questions

What is examiner Catherine S Branch's allowance rate?

85.7% of resolved applications examined by Catherine S Branch were allowed (965 resolved cases), compared with 56.6% across Art Unit 1745 over the last five years.

Does an interview help with examiner Catherine S Branch?

This examiner's interview lift is +3.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Catherine S Branch take to allow a patent?

Applications allowed by Catherine S Branch took 861 days on average from filing to allowance.

Which art unit does examiner Catherine S Branch work in?

Catherine S Branch examines applications in Art Unit 1745 in Tech Center 1700 (Chemistry & Materials).

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