Prosecution Insights
Last updated: April 19, 2026

Examiner: CULLEN, SEAN P

Tech Center 1700 • Art Units: 1725 1795

This examiner grants 69% of resolved cases

Performance Statistics

68.8%
Allow Rate
+3.8% vs TC avg
1271
Total Applications
+29.1%
Interview Lift
1250
Avg Prosecution Days
Based on 1222 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
21.8%
§102 Novelty
35.5%
§103 Obviousness
37.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18315509 DEVICE FOR WRAPPING INSULATING FILM AROUND BATTERY CELL Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
19320650 ELECTROLYTE INCLUDING ELECTROLYTE SOLVENT, FLUOROETHER, AND BIS(FLUOROSULFONYL) SALT, AND LITHIUM METAL ELECTROCHEMICAL CELLS INCLUDING THE SAME Non-Final OA 24M Technologies, Inc.
18435663 SEPARATOR INCLUDING POLYETHYLENE WITH HIGHLY ENTANGLED POLYMER CHAINS, AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME Non-Final OA LG ENERGY SOLUTION, LTD.
18276873 LITHIUM-SULFUR BATTERY WITH IMPROVED ENERGY DENSITY AND POWER Non-Final OA LG ENERGY SOLUTION, LTD.
18198711 LITHIUM ION SECONDARY BATTERY AND SEPARATION MEMBRANE Non-Final OA LG Energy Solution, Ltd.
18020498 SEPARATOR FOR ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME Final Rejection LG ENERGY SOLUTION, LTD.
17998357 LITHIUM ION SECONDARY BATTERY AND SEPARATION MEMBRANE Non-Final OA LG ENERGY SOLUTION, LTD.
17998158 SEPARATION MEMBRANE WITH SUB-NANOMETER PORE SIZE, AND LITHIUM ION SECONDARY BATTERY INCLUDING THE SAME Non-Final OA LG ENERGY SOLUTION, LTD.
17921583 SEPARATOR FOR SECONDARY BATTERY INCLUDING ADHESIVE LAYER AND METHOD FOR MANUFACTURING THE SAME Non-Final OA LG ENERGY SOLUTION, LTD.
17794852 NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18016027 NANO-COMPOSITE SEPARATOR INCLUDING POLYMER MATRIX AND HYDROPHOBIC FILLER, METHOD FOR MANUFACTURING, AND LITHIUM ION BATTERY INCLUDING THE SAME Non-Final OA EVONIK OPERATIONS GMBH
18365020 A BATTERY PACK AND AN ELECTRIC TOOL INCLUDING THE BATTERY PACK Non-Final OA TECHTRONIC CORDLESS GP
18545605 Cross-Linked Polyolefin Separator and Method for Producing Same Non-Final OA LG Chem, Ltd.
19201052 Positive Electrode Active Material, Method for Manufacturing Positive Electrode Active Material, and Secondary Battery Final Rejection SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
18680157 Failsafe Liquefied Gas Electrolytes with Solidifying Agents Non-Final OA SOUTH 8 TECHNOLOGIES, INC.
18170117 BATTERY MODULE INCLUDING TAPPING ELEMENT AND HOUSING CONNECTED IN FLUID-TIGHT MANNER Non-Final OA Robert Bosch GmbH
17977854 COMPOSITE, POLYMER ELECTROLYTE, ELECTROCHEMICAL DEVICE, POLYMER-BASED SOLID-STATE BATTERY, AND ACTUATOR Non-Final OA DAIKIN INDUSTRIES, LTD.
18449318 Solid Electrolyte Having Excellent Moisture Stability and Method for Preparing Same Non-Final OA Samsung SDI Co., Ltd.
18173233 ELECTROLYTIC SOLUTION FOR SECONDARY BATTERY, AND SECONDARY BATTERY Non-Final OA MURATA MANUFACTURING CO., LTD.
18056562 Polymer Blends Having Improved Ion Conductivity, Devices, and Methods Non-Final OA The Trustees of the University of Pennsylvania
18116972 NONAQUEOUS ELECTROLYTE SECONDARY BATTERY SEPARATOR, NONAQUEOUS ELECTROLYTE SECONDARY BATTER MEMBER, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY Final Rejection Sumitomo Chemical Company, Limited
18440839 BROMINE AND IODINE LITHIUM PHOSPHOROUS SULFIDE SOLID ELECTROLYTE AND SOLID-STATE BATTERY INCLUDING THE SAME Non-Final OA Solid Power Operating, Inc.
18143363 BATTERY PROTECTIVE THERMAL ENCLOSURE Non-Final OA STEWART & STEVENSON LLC
17613074 LITHIUM ION BATTERIES Non-Final OA Wacker Chemie AG
18227880 CATHODE MATERIAL PRECURSOR AND PREPARATION METHOD AND APPLICATION THEREOF Non-Final OA HUNAN BRUNP EV RECYCLING CO., LTD.
18189404 METHODS OF FORMING A SECONDARY BATTERY ASSEMBLY Non-Final OA Enovix Corporation
18366251 LITHIUM BIS(FLUOROSULFONYL)IMIDE, PREPARATION METHOD THEREOF, ELECTROLYTIC SOLUTION AND SECONDARY BATTERY Non-Final OA CATL-SICONG NOVEL MATERIALS CO., LTD
18002057 LITHIUM-ION CELL HAVING SEPARATOR WITH INORGANIC MATERIAL AND WELDED CURRENT COLLECTOR CONNECTION Non-Final OA VARTA Microbattery GmbH
17928284 LITHIUM-ION CELL INCLUDING CURRENT COLLECTOR IN DIRECT WELDED CONTACT WITH SHEET METAL MEMBER Non-Final OA VARTA Microbattery GmbH
18331446 BATTERY INCLUDING ROLLING DIAPHRAGM ACCOMODATING VOLUME CHANGE OF BATTERY Non-Final OA FORM ENERGY, INC.

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