Prosecution Insights
Last updated: September 25, 2026

Examiner: BUTTNER, DAVID J

Tech Center 3700 • Art Units: 1734 1765 1796 3711

This examiner grants 64% of resolved cases

Performance Statistics

63.9%
Allow Rate
-6.1% vs TC avg
1,202
Total Applications
+4.0%
Interview Lift
1001
Avg Prosecution Days
Based on 1165 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
22.1%
§102 Novelty
40.2%
§103 Obviousness
23.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18516918 INKJET INK AND INJKET INK PRODUCTION METHOD Non-Final OA KYOCERA Document Solutions Inc.
18569821 Polyester Resin and Preparation Method Thereof Non-Final OA LG Chem, LTD.
18357269 BIOBASED COPOLYMERS OF POLY(ETHYLENE TEREPHTHALATE) WITH SUPERIOR THERMOMECHANICAL PROPERTIES Non-Final OA Iowa State University Research Foundation, Inc.
18456128 METHOD FOR PRODUCING FLUORINE-CONTAINING COMPOUND AND METHOD FOR PRODUCING SURFACE TREATMENT AGENT Non-Final OA AGC Inc.
17630965 METHOD OF MAKING GLYCEROL CARBONATE (METH)ACRYLATE AND CURABLE COMPOSITIONS BASED THEREON Final Rejection Arkema France
18944607 MOLDED ARTICLE HAVING REDUCED BIREFRINGENCE Non-Final OA Lotte Chemical Corporation
18551213 METHOD FOR PRODUCING POLYIMIDE RESIN POWDER Final Rejection MITSUBISHI GAS CHEMICAL COMPANY, INC.
18277203 RESIN COMPOSITION AND USE THEREOF Final Rejection MITSUI CHEMICALS, INC.

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