Prosecution Insights
Last updated: October 23, 2026

Vivian S Cheng, USPTO Patent Examiner

Listed by the USPTO as CHENG, VIVIAN S

Tech Center 1700 • Art Units: 1725 1781 1782

This examiner grants 0% of resolved cases

Performance Statistics

—
Allow Rate
-65.0% vs TC avg
28
Total Applications
—
Interview Lift
0
Avg Prosecution Days
Based on 0 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
2.9%
§102 Novelty
80.0%
§103 Obviousness
17.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18668436 ALL-SOLID-STATE BATTERY Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18537271 POWER STORAGE CELL MANUFACTURING METHOD AND POWER STORAGE CELL Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18530299 METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE ACTIVE MATERIAL Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18732497 BATTERY Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18602716 COATED ACTIVE MATERIAL, ELECTRODE MATERIAL AND BATTERY Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18687449 POSITIVE ELECTRODE FOR SECONDARY BATTERIES, AND SECONDARY BATTERY Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18726782 METHOD FOR MANUFACTURING SECONDARY BATTERY Non-Final OA LG Energy Solution, Ltd.
18678145 ANODE FOR AN ALL-SOLID-STATE BATTERY AND AN ALL-SOLID-STATE BATTERY INCLUDING THE SAME Non-Final OA KIA CORPORATION
18752997 BATTERY CELLS AND BATTERY MODULES Non-Final OA SAMSUNG SDI CO., LTD.
18671826 GEL POLYMER ELECTROLYTE FOR LITHIUM BATTERY AND LITHIUM BATTERY INCLUDING THE SAME Non-Final OA Samsung SDI Co., Ltd.
18643460 ALL-SOLID SECONDARY BATTERY Non-Final OA Samsung SDI Co., Ltd.
18632165 SECONDARY BATTERY Non-Final OA Samsung SDI Co., Ltd.
18376915 WINDING MEMBER AND SECONDARY BATTERY Non-Final OA SAMSUNG SDI CO., LTD.
18716716 NEGATIVE ELECTRODE FOR SOLID ELECTROLYTE BATTERY AND SOLID ELECTROLYTE BATTERY Non-Final OA TDK CORPORATION
18619247 ENERGY STORAGE APPARATUS Non-Final OA GS Yuasa International Ltd.
18196061 STORAGE SYSTEM CONFIGURED FOR USE WITH AN ENERGY MANAGEMENT SYSTEM Final Rejection Enphase Energy, Inc.
18756240 ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE CONTAINING SAME Non-Final OA Ningde Amperex Technology Limited
18618173 ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE COMPRISING SAME Non-Final OA Ningde Amperex Technology Limited

Facing This Examiner?

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

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

Which art unit does examiner Vivian S Cheng work in?

Vivian S Cheng examines applications in Art Unit 1725 in Tech Center 1700 (Chemistry & Materials).

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