Prosecution Insights
Last updated: April 19, 2026

Examiner: BUTTNER, DAVID J

Tech Center 3700 • Art Units: 1765 1796 3711

This examiner grants 64% of resolved cases

Performance Statistics

63.9%
Allow Rate
-6.1% vs TC avg
1197
Total Applications
+4.0%
Interview Lift
1028
Avg Prosecution Days
Based on 1148 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
7.8%
§102 Novelty
55.6%
§103 Obviousness
9.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17924188 POLYESTERS PREPARED FROM 1,1-DIESTER-1-ALKENES CONTAINING A STRONG ACID AND STABILIZER Final Rejection Nippon Shokubai Co., Ltd.
17783764 INDUSTRIAL FAN OR BLOWER COMPRISING A FLAME-RETARDANT POLYAMIDE COMPOSITION Final Rejection BASF SE
18276211 METHOD FOR PREPARING POLYPHENYLENE OXIDE Non-Final OA LG CHEM, LTD.
17839554 POLYCARBONATE RESIN COMPOSITION Final Rejection MITSUBISHI CHEMICAL CORPORATION
18005312 ALIPHATIC-POLYESTER-BASED RESIN COMPOSITION AND UTILIZATION THEREOF Final Rejection KANEKA CORPORATION
19114919 POLYCARBONATE COMPOSITION, ARTICLES FORMED THEREFROM, AND METHODS FOR THE MANUFACTURE THEREOF Non-Final OA SHPP GLOBAL TECHNOLOGIES B.V.
18480576 Thermoplastic Compositions Including Natural Fiber Having Good Mechanical Properties and Good Dielectric Properties Non-Final OA SHPP GLOBAL TECHNOLOGIES B.V.
18269660 Transparent Weatherable Electrically Conductive Polycarbonate Blend Compositions Non-Final OA SHPP GLOBAL TECHNOLOGIES B.V.
18003353 THERMOPLASTIC COMPOSITIONS WITH IMPROVED HYDROLYTIC AND HEAT STABILITY Final Rejection SHPP Global Technologies B.V.
18258236 PLASTICIZER COMPOSITION Non-Final OA HANWHA SOLUTIONS CORPORATION
17910589 METHOD FOR PRODUCING POLYETHER KETONE KETONE AND POLYETHER KETONE KETONE PRODUCED THEREBY Non-Final OA HANWHA SOLUTIONS CORPORATION
18296839 BINDER RESIN COMPOSITION FOR TONERS Non-Final OA KAO CORPORATION
18633839 GOLF BALL Non-Final OA Sumitomo Rubber Industries, Ltd.
18997615 MINERAL-FILLED POLYCARBONATE BLEND MOULDING COMPOSITION HAVING A LOW BPA CONTENT, AND METHOD FOR PREPARING SAME Final Rejection Covestro Deutschland AG
17918662 Polyester Carbonates From Cycloaliphatic Diacids, 1,4:3,6-Dianhydrohexitol and a Further Aliphatic Dihydroxy Compound Non-Final OA Covestro Deutschland AG
18550840 MODIFIED GUAYULE RESIN PRODUCT AND RELATED PROCESSES Non-Final OA Bridgestone Corporation
18102893 POLYCARBONATE COMPOSITION WHICH EXHIBITS A FLECKED APPEARANCE WHEN MOLDED Non-Final OA TRINSEO EUROPE GMBH
17944416 METHOD FOR PRODUCING POLYALKYLENE OXIDE Non-Final OA SUMITOMO SEIKA CHEMICALS CO., LTD.
18944607 MOLDED ARTICLE HAVING REDUCED BIREFRINGENCE Non-Final OA Lotte Chemical Corporation
18255122 POLYAMIDE COMPOSITIONS Non-Final OA Dow Global Technologies LLC
18906857 RESIN COMPOSITION COMPRISING THERMOPLASTIC PLASTOMER AND HOLLOW RESIN PARTICLES AND MOLDED PRODUCT THEREOF Non-Final OA ZEON CORPORATION
17424065 METHOD FOR PRODUCING CARBOXYL GROUP- CONTAINING LIQUID NITRILE RUBBER Final Rejection ZEON CORPORATION
17701583 POLYMERS AND CO-POLYMERS FOR POLYMER MATRIX COMPOSITES AND HIGH YIELD CARBON-CARBON COMPOSITE STRUCTURES THEREFROM Non-Final OA Mississippi State University
18277203 RESIN COMPOSITION AND USE THEREOF Non-Final OA MITSUI CHEMICALS, INC.
18515885 METHODS FOR PRODUCING POLYCARBONATE COPOLYMER AND POLYSILOXANE COMPOUND, POLYCARBONATE COPOLYMER, POLYSILOXANE COMPOUND, COMPOSITION, AND MOLDED BODY Non-Final OA MITSUBISHI GAS CHEMICAL COMPANY, INC.
18276534 RESIN COMPOSITION, COATING FILM USING SAME, AND ELECTROLYTE Non-Final OA MITSUBISHI GAS CHEMICAL COMPANY, INC.
18275318 POLYESTERAMINES AND POLYESTER QUATS Non-Final OA ARKEMA FRANCE
17630965 METHOD OF MAKING GLYCEROL CARBONATE (METH)ACRYLATE AND CURABLE COMPOSITIONS BASED THEREON Final Rejection Arkema France
18023717 POLYMER BLENDS OF ALIPHATIC POLYKETONE AND ACRYLONITRILE BUTADIENE STYRENE Non-Final OA Avient Corporation
18004817 THERMOPLASTIC POLYESTER FOR PRODUCING 3D-PRINTED OBJECTS Final Rejection ROQUETTE FRERES

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