Prosecution Insights
Last updated: April 19, 2026

Examiner: KARST, DAVID THOMAS

Tech Center 1700 • Art Units: 1671 1732 1767 1796

This examiner grants 64% of resolved cases

Performance Statistics

64.4%
Allow Rate
-0.6% vs TC avg
1035
Total Applications
+10.1%
Interview Lift
1096
Avg Prosecution Days
Based on 977 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
13.0%
§102 Novelty
49.3%
§103 Obviousness
24.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17781233 METHOD FOR PREPARATION OF LIGNIN OLIGOMERS Non-Final OA BASF SE
18284668 POLYESTER RESIN Non-Final OA FUJIFILM CORPORATION
18321416 METHOD FOR MAKING HEVL-FILTERING CONTACT LENSES Non-Final OA Alcon Inc.
18043667 Color Stable Epoxy Compositions Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18337581 POLYMER, ORGANIC SEMICONDUCTOR MATERIAL, STRETCHABLE POLYMER THIN FILM, AND ELECTRONIC DEVICE Non-Final OA THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
18021604 Laser Direct Structuring Compositions Including a Crystalline Polyester Final Rejection SHPP GLOBAL TECHNOLOGIES B.V.
18277649 HIGH MELT STRENGTH PP BLENDS FOR FOAM WITH HIGH THERMOSTABILITY Non-Final OA SABIC GLOBAL TECHNOLOGIES B.V.
18000869 PROCESS FOR PRODUCING THERMALLY STABILIZED LIGNIN Final Rejection Stora Enso OYJ
18932752 HEAT-CURABLE MALEIMIDE RESIN COMPOSITION Non-Final OA Shin-Etsu Chemical Co., Ltd.
18258467 COMPOSITION AND SHEET Non-Final OA Resonac Corporation
18274115 TIRE INCORPORATING A RUBBER COMPOSITION INCLUDING A SPECIFIC HYDROCARBON RESIN Non-Final OA COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
18270646 PROCESS FOR PREPARING BISPHENOL A (BPA) IN THE PRESENCE OF 2-METHYL BENZOFURAN Non-Final OA Covestro Deutschland AG
18270643 PROCESS FOR PREPARING BISPHENOL A (BPA) IN THE PRESENCE OF CUMENE Non-Final OA Covestro Deutschland AG
18270364 PROCESS FOR PREPARING BISPHENOL A (BPA) IN THE PRESENCE OF ACETOPHENONE Non-Final OA Covestro Deutschland AG
18021451 NEAR-INFRARED LIGHT TRANSMITTING BLACK MATERIAL Non-Final OA SEKISUI CHEMICAL CO., LTD.
18036721 TOUGH, REPROCESSABLE ELASTOMERS AND METHODS OF MAKING AND USING SAME Non-Final OA DUKE UNIVERSITY
18274623 RESIN COMPOSITION AND MOLDED BODY Non-Final OA KURARAY CO., LTD.
17870982 AMORPHOUS EPOXY FIBER, FIBER STRUCTURE, AND MOLDED BODY Final Rejection KURARAY CO., LTD.
18005009 ADHESIVE POLYETHYLENE COMPOSITION Final Rejection BOREALIS AG
18359949 CRASH DURABLE, STRESS DURABLE AND WELDABLE EPOXY ADHESIVES Final Rejection Henkel AG & Co. KGaA
18903397 PROCESSED LIGNIN AND PROCESS TO PREPARE SUCH Non-Final OA Avantium Knowledge Centre B.V.
18282864 THERMOPLASTIC POLYESTER ELASTOMER, RESIN COMPOSITION CONTAINING SUCH ELASTOMER, AND MOLDED ARTICLE OBTAINED FROM THE RESIN COMPOSITION Non-Final OA TOYOBO MC Corporation
18270372 THERMOPLASTIC POLYESTER RESIN COMPOSITION, AND EXTRUSION-MOLDED ARTICLE COMPOSED THEREOF Non-Final OA TOYOBO MC Corporation
18004744 METHOD FOR PRODUCING STABILIZED LIGNIN HAVING A HIGH SPECIFIC SURFACE AREA Final Rejection Suncoal Industries GmbH
18268532 BIODEGRADABLE RESIN COMPOSITION AND MOLDED BODY Non-Final OA TOPPAN INC.
18253035 TRANSPARENT COMPOSITIONS WITH GOOD ALCOHOL RESISTANCE AND FATIGUE STRENGTH Non-Final OA ARKEMA FRANCE
18282470 PROCESS OF CONTINUOUSLY MANUFACTURING A POLY(HYDROXY ACID) COPOLYMER WITH TUNABLE MOLECULAR WEIGHT, STRUCTURE AND COMPOSITION Non-Final OA SULZER MANAGEMENT AG
18035276 PROCESS FOR MAKING SILICONE RUBBER BASE COMPOSITIONS Non-Final OA DOW SILICONES CORPORATION
18263416 SENSITIZER FOR NUCLEIC ACID AMPLIFICATION, COMPOSITION FOR NUCLEIC ACID AMPLIFICATION, AND TEST KIT Non-Final OA NOF CORPORATION
18002790 METHOD FOR OBTAINING BIOSOURCED POLYEPOXIDES WITH IMPROVED PROPERTIES Non-Final OA ROQUETTE FRERES

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month