Prosecution Insights
Last updated: October 27, 2026

Robert T Butcher, USPTO Patent Examiner

Listed by the USPTO as BUTCHER, ROBERT T

Tech Center 1700 • Art Units: 1761 1762 1763 1764 1768

This examiner grants 71% of resolved cases

Analysis

BUTCHER, ROBERT T is assigned to USPTO Technology Center 1700 and art unit 1761. The profile reports 980 resolved cases and a 71.3% allowance rate. The median time to allowance is 949 days, indicating that applicants should expect prosecution to extend across a meaningful period and should plan amendment strategy accordingly.

Interviews show a reported lift of 16.7%. The listed companies are 3M Innovative Properties Company, LG Chem Ltd., and Align Technology Inc. BIRCH STEWART KOLASCH & BIRCH, LLP, Abel Schillinger, LLP, and ARENTFOX SCHIFF LLP appear among the associated firms. The range of chemical, materials, and medical technology applicants suggests that claim construction and support for specific technical relationships should be developed early, with interviews used to address focused examiner concerns.

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

Performance Statistics

71.3%
Allow Rate
+6.3% vs TC avg
1,049
Total Applications
+16.7%
Interview Lift
949
Avg Prosecution Days
Based on 980 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
10.6%
§102 Novelty
52.6%
§103 Obviousness
25.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18553226 FLUOROPOLYMER COMPOSITIONS COMPRISING FLUOROPOLYMER WITH POLYMERIZED UNSATURATED FLUORINATED ALKYL ETHER SUITABLE FOR COPPER AND ELECTRONIC TELECOMMUNICATIONS ARTICLES Final Rejection 3M INNOVATIVE PROPERTIES COMPANY
18552261 FLUOROPOLYMER COMPOSITIONS COMPRISING AMORPHOUS FLUOROPOLYMER AND CRYSTALLINE FLUOROPOLYMER SUITABLE FOR COPPER AND ELECTRONIC TELECOMMUNICATIONS ARTICLES Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18348262 CURABLE COMPOSITIONS WITH CROSSLINKERS FOR ADDITIVE MANUFACTURING Final Rejection Align Technology, Inc.
18270772 STABILIZING A SHAPED POLYMER ARTICLE AGAINST DEGRADATION INDUCED BY ARTIFICIAL UV-C LIGHT Non-Final OA BASF SE
18738466 CURABLE (METH)ACRYLATE COMPOSITIONS Non-Final OA Henkel AG & Co. KGaA
18524375 FILLER COMPOSITION, COMPOSITE MATERIAL AND COMPOSITE MATERIAL LAYER WITH THERMAL BARRIER PROPERTIES Non-Final OA SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
18269655 PROCESS FOR PREPARING A POLYAMIDE BY COPOLYMERIZATION OF MULTIPLE COMPONENTS, POLYAMIDE PREPARED THEREBY, AND COMPOSITION COMPRISING THE SAME Final Rejection HANWHA SOLUTIONS CORPORATION
16644017 BIOCOMPATIBLE POLYMER POWDERS FOR ADDITIVE MANUFACTURING Non-Final OA Evonik Operations GmbH
18633901 MEDICAL RUBBER COMPOSITION AND MEDICAL RUBBER PRODUCT Non-Final OA Sumitomo Rubber Industries, Ltd.
18684744 HIGH MELT FLOW POLYPROPYLENE COMPOSITION Non-Final OA BOREALIS AG
18347539 POLYAMIDE-LONG GLASS FIBER REINFORCED COMPOSITE MATERIAL AND METHOD FOR PRODUCING THE SAME Non-Final OA NAN YA PLASTICS CORPORATION
18682202 Curable Composition Non-Final OA LG Chem, Ltd.
18269358 Polypropylene Resin Composition and Method for Preparing the Same Final Rejection LG Chem, Ltd.
18683626 LATEX COMPOSITION AND DIP-MOLDED BODY Non-Final OA ZEON CORPORATION
17788419 POLYMER COMPOSITION FOR FILMS HAVING IMPROVED MECHANICAL PROPERTIES AND DEGRADABILITY Non-Final OA NOVAMONT S.P.A.

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Frequently Asked Questions

What is examiner Robert T Butcher's allowance rate?

71.3% of resolved applications examined by Robert T Butcher were allowed (980 resolved cases), compared with 46.8% across Art Unit 1761 over the last five years.

Does an interview help with examiner Robert T Butcher?

This examiner's interview lift is +16.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Robert T Butcher take to allow a patent?

Applications allowed by Robert T Butcher took 949 days on average from filing to allowance.

Which art unit does examiner Robert T Butcher work in?

Robert T Butcher examines applications in Art Unit 1761 in Tech Center 1700 (Chemistry & Materials).

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