Prosecution Insights
Last updated: May 29, 2026

Examiner: SORKIN, DAVID L

Tech Center 1700 • Art Units: 1774 1797

This examiner grants 67% of resolved cases

Performance Statistics

67.4%
Allow Rate
+2.4% vs TC avg
1,216
Total Applications
+12.5%
Interview Lift
1168
Avg Prosecution Days
Based on 1175 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
21.6%
§102 Novelty
54.8%
§103 Obviousness
11.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17920876 MODULAR BLENDER AND METHOD OF USING SAME Non-Final OA Merck Sharp & Dohme LLC
18569137 DIRECT FEED PROPPANT SYSTEM Non-Final OA NATIONAL OILWELL VARCO, L.P.
18355902 CONDITIONING DRILLING FLUID Non-Final OA Saudi Arabian Oil Company
18103798 ADAPTER AND ASSEMBLY FOR PHARMACEUTICAL COMPOUNDING Non-Final OA MEDISCA PHARMACEUTIQUE INC.
18258645 JET NOZZLE FOR POWDER HANDLING APPARATUS Non-Final OA Tetra Laval Holdings & Finance S.A.
18239103 METHODS AND COMPOSITIONS FOR CONCRETE PRODUCTION Non-Final OA CARBONCURE TECHNOLOGIES INC.
18174002 SYSTEMS AND RELATED METHODS FOR DISPERSING PARTICLES IN A FLUID OF A FLUID CONTAINER Non-Final OA BATTELLE SAVANNAH RIVER ALLIANCE, LLC
18380129 ADDITIVE DELIVERY CONTROL SYSTEMS AND METHODS Non-Final OA Cirkul, Inc.
18267910 ROTOR SHAFT COMPRISING A HELIX FOR A DYNAMIC MIXER FOR MIXING LOW- TO HIGH-VISCOSITY COMPONENTS Non-Final OA Kulzer GmbH
18127977 APPARATUS FOR MANUFACTURING COSMETIC AND CONTROL METHOD THEREOF Non-Final OA Amorepacific Corporation
18252513 END OF HOSE MIXING SYSTEMS AND METHODS Non-Final OA Dyno Nobel Asia Pacific Pty Limited
17905609 LINEAR PULSATING TYPE MAGNETIC MIXING SYSTEM AND AN ASSOCIATED METHOD OF OPERATION Final Rejection GLOBAL LIFE SCIENCES SOLUTIONS USA LLC
18351445 APPARATUS AND METHOD FOR DRYING MATERIAL AND ASPHALT MIXING FACILITY COMPRISING SUCH AN APPARATUS Final Rejection Benninghoven Zweigniederlassung der Wirtgen Mineral Technologies GmbH
18036330 STIRRING IMPELLER, ARRANGEMENT AND USE Non-Final OA Metso Outotec Finland Oy
18334052 Laboratory Instrument with Mixing Mechanism for Mixing a Medium of a Slide Non-Final OA QInstruments GmbH
18142344 CONTAINER FOR MIXING LIQUIDS Final Rejection TROVE IP HOLDINGS LLC
18117030 HANDHELD APPLIANCE Non-Final OA StoreBound LLC
17920364 REFINER, INSTALLATION AND METHOD FOR TREATING COMPOSITE PRODUCTS Final Rejection SOPREMA
17831783 METHOD AND ARRANGEMENT FOR MIXING A LIQUID Non-Final OA Single Use Support GmbH
17064886 LOCK MODE FOR A BLENDER Non-Final OA MavorCo Operations LLC

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