Prosecution Insights
Last updated: April 19, 2026

Examiner: DARLING, DEVIN MITCHELL

Tech Center 1700 • Art Units: 1745 1754 1763 1764

This examiner grants 68% of resolved cases

Performance Statistics

68.0%
Allow Rate
+3.0% vs TC avg
76
Total Applications
+8.3%
Interview Lift
1189
Avg Prosecution Days
Based on 25 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
13.9%
§102 Novelty
51.0%
§103 Obviousness
22.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18262289 STYRENE-BASED RESIN COMPOSITION Non-Final OA IDEMITSU KOSAN CO., LTD.
17776397 THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE INCLUDING THE SAME Final Rejection LG CHEM, LTD.
17629877 Method for Preparing Modified Conjugated Diene-Based Polymer Non-Final OA LG CHEM, LTD.
18672783 METHACRYLIC RESIN COMPOSITION FOR INJECTION MOLDING OR EXTRUSION MOLDING, RESIN MOLDED BODY, AND METHOD FOR PRODUCING SAME Non-Final OA MITSUBISHI CHEMICAL CORPORATION
18451502 COPOLYMER, MOLDED BODY, INJECTION MOLDED BODY, AND COATED ELECTRICAL WIRE Non-Final OA DAIKIN INDUSTRIES, LTD.
18266106 MELT-BLOWN WEB MADE OF POLYPROPYLENE Non-Final OA SABIC GLOBAL TECHNOLOGIES B.V.
17785683 POLYOLEFIN/ POLYESTER RESIN Non-Final OA SABIC GLOBAL TECHNOLOGIES B.V.
18336843 ADHESIVE AND METHOD FOR REMOVING THE SAME Non-Final OA INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
18270813 AN ACRYLIC PRESSURE SENSITIVE ADHESIVE AND USE THEREOF FOR PROVIDING SELF-ADHERING SEALING DEVICES Final Rejection SIKA TECHNOLOGY AG
17928040 Resin Composition, and Aqueous Coating Fluid and Multilayer Structure Each Comprising Same Non-Final OA KURARAY CO., LTD.
18776834 RESIN COMPOSITION FOR FORMING PHASE-SEPARATED STRUCTURE AND METHOD FOR PRODUCING STRUCTURE HAVING PHASE-SEPARATED STRUCTURE Final Rejection TOKYO OHKA KOGYO CO., LTD.
17995538 ENHANCED MELT STRENGTH LOW-DENSITY POLYETHYLENE FOR USE IN FILMS OR BLENDS Final Rejection Dow Global Technologies LLC
17926293 POLYMER FOR POWER CABLE INSULATION Non-Final OA BOREALIS AG
17765907 POLYMER COMPOSITION SUITABLE FOR MAKING BLOWN FILMS Final Rejection BOREALIS AG
17806000 Aqueous resin emulsion Non-Final OA Henkel AG & Co., KGaA
18043712 FLUOROPOLYMER COMPOSITION Non-Final OA SYENSQO SPECIALTY POLYMERS ITALY S.p.A.
18283392 POLAR RESIN COMPOSITION AND LAMINATE Final Rejection MITSUI CHEMICALS, INC.
18596722 HOT MELT ADHESIVE COMPOSITION Non-Final OA BOSTIK SA
17774626 RESIN COMPOSITION, PLATE-SHAPED MOLDED ARTICLE, MULTILAYERED ARTICLE, AND ANTI-REFLECTION FILM Final Rejection MITSUBISHI GAS CHEMICAL COMPANY, INC.
17914380 POLYMER COMPOSITION FOR WATERPROOF-BREATHABLE FILMS Non-Final OA ARKEMA FRANCE
17914178 COMPOSITIONS WHICH HAVE POLYESTER-POLYSILOXANE COPOLYMERS Non-Final OA Wacker Chemie AG
17782732 Propylene-Based Elastomer Compositions, Articles Thereof, and Methods Thereof Non-Final OA ExxonMobil Chemical Patents Inc.
18022775 POLYPROPYLENE COMPOSITIONS Non-Final OA TOTALENERGIES ONETECH BELGIUM
17782020 ROTARY VACUUM VESSEL CLOSURE WITH VESSEL CLOSURE SEAL Non-Final OA ACTEGA DS GMBH
17775787 VESSEL CLOSURE SEAL AND VESSEL CLOSURE Non-Final OA ACTEGA DS GMBH
18261316 PROPYLENE/ETHYLENE RANDOM COPOLYMER-BASED RESIN Non-Final OA ESENTTIA S.A.
18256239 PROCESS FOR IMPROVING THE VISCOSITY OF RECYCLED POLYETHYLENE Non-Final OA Synthomer Adhesive Technologies LLC
17418556 CHLOROPRENE POLYMER LATEX AND METHOD FOR PRODUCING SAME Final Rejection SHOWA DENKO K.K
17784672 POLYPROPYLENE COMPOSITION, PREPARATION METHOD AND USE THEREOF Non-Final OA KINGFA SCI. & TECH. CO., LTD.
17756185 THIOL-MODIFIED POLYMER COMPOUND, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF Non-Final OA BLAFAR BIOTECHNOLOGY (HANGZHOU) LTD

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