Prosecution Insights
Last updated: May 29, 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
1,201
Total Applications
+4.1%
Interview Lift
1001
Avg Prosecution Days
Based on 1153 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
2.2%
§102 Novelty
66.9%
§103 Obviousness
3.8%
§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
18633839 GOLF BALL Non-Final OA Sumitomo Rubber Industries, Ltd.
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.
18037152 POLYCARBONATE COMPOSITION, METHOD FOR THE MANUFACTURE THEREOF, AND ARTICLES FORMED THEREFROM Final Rejection SHPP GLOBAL TECHNOLOGIES B.V.
18003353 THERMOPLASTIC COMPOSITIONS WITH IMPROVED HYDROLYTIC AND HEAT STABILITY Final Rejection SHPP Global Technologies B.V.
17910589 METHOD FOR PRODUCING POLYETHER KETONE KETONE AND POLYETHER KETONE KETONE PRODUCED THEREBY Non-Final OA HANWHA SOLUTIONS CORPORATION
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
18944607 MOLDED ARTICLE HAVING REDUCED BIREFRINGENCE Non-Final OA Lotte Chemical Corporation
18255122 POLYAMIDE COMPOSITIONS Non-Final OA Dow Global Technologies LLC
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 Final Rejection MITSUBISHI GAS CHEMICAL COMPANY, INC.
18273105 THERMOPLASTIC RESIN AND OPTICAL LENS INCLUDING SAME 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
17424065 METHOD FOR PRODUCING CARBOXYL GROUP- CONTAINING LIQUID NITRILE RUBBER Final Rejection ZEON CORPORATION
18004817 THERMOPLASTIC POLYESTER FOR PRODUCING 3D-PRINTED OBJECTS Final Rejection ROQUETTE FRERES
18257714 POLYESTER COMPOSITIONS COMPRISING TETRAMETHYL-CYCLOBUTANEDIOL HAVING AN IMPROVED CATALYST SYSTEM COMPRISING LITHIUM AND GALLIUM ATOMS Non-Final OA Eastman Chemical Company
18257729 POLYESTER COMPOSITIONS COMPRISING TETRAMETHYL CYCLOBUTANEDIOL HAVING AN IMPROVED CATALYST SYSTEM COMPRISING LITHIUM AND ALUMINUM Non-Final OA Eastman Chemical Company
17997071 PRODUCTION METHOD FOR PREPARING POLYLACTIC ACID BY MEANS OF RING-OPENING POLYMERIZATION METHOD, AND PREPOLYMER MIXTURE AND POLYLACTIC ACID Non-Final OA WANHUA CHEMICAL GROUP CO., LTD.
17701583 POLYMERS AND CO-POLYMERS FOR POLYMER MATRIX COMPOSITES AND HIGH YIELD CARBON-CARBON COMPOSITE STRUCTURES THEREFROM Non-Final OA Mississippi State University
18039847 FLUORORESIN Non-Final OA CHEMOURS-MITSUI FLUOROPRODUCTS CO., LTD
17642656 RESIN COMPOSITION, ADHESIVE SHEET, PREPREG, AND LAMINATE Non-Final OA Risho Kogyo Co., Ltd.
17999787 BIODEGRADABLE POLYESTER AND ADHERENT PACKAGING FILMS MADE THEREFROM Non-Final OA NOVAMONT S.P.A.
18013632 MULTIPLY FUSED PORPHYRIN POLYMER FILM COATED ON A SUBSTRATE Final Rejection LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST)

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