Prosecution Insights
Last updated: October 01, 2026

Examiner: CHAN, HENG M

Tech Center 1700 • Art Units: 1725 1728 1793 1795

This examiner grants 61% of resolved cases

Analysis

Heng M Chan operates as an examiner in Tech Center 1700 and Art Unit 1725. The data shows 408 resolved cases for this examiner. The allowance rate is 61.0 percent, which represents the proportion of applications that are granted. The median days to allowance is 1268, providing a timeline for the prosecution process in this specific unit.

The interview lift is 31.9 percent. This figure indicates that conducting an interview is associated with a 31.9 percent change in the likelihood of allowance. With 408 resolved cases, this lift is a factor in the examiner's profile. The 61.0 percent allowance rate and the 1268 median days to allowance are the available figures for developing a prosecution strategy.

The Art Unit 1725 designation and the Tech Center 1700 location define the scope of this profile. The 61.0 percent allowance rate provides a statistical baseline, while the 31.9 percent interview lift highlights the impact of verbal negotiation. These resolved cases define the current data for this examiner based on the provided prosecution history.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

61.0%
Allow Rate
-4.0% vs TC avg
417
Total Applications
+31.9%
Interview Lift
1268
Avg Prosecution Days
Based on 408 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
19.3%
§102 Novelty
49.2%
§103 Obviousness
25.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18583417 FRAMED MEMBRANE ELECTRODE ASSEMBLY Non-Final OA HONDA MOTOR CO., LTD.
18565211 CYLINDRICAL BATTERY, AND BATTERY PACK AND VEHICLE INCLUDING THE SAME Non-Final OA LG ENERGY SOLUTION, LTD.
18285489 NOVEL ADDITIVE FOR NON-AQUEOUS ELECTROLYTE SOLUTION AND LITHIUM SECONDARY BATTERY COMPRISING SAME Non-Final OA LG ENERGY SOLUTION, LTD.
18550769 BATTERY, ELECTRONIC DEVICE, AND VEHICLE Non-Final OA SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
17563964 ENERGY STORAGE MODULE Non-Final OA Samsung SDI Co., Ltd.
18673324 BATTERY MODULE INCLUDING THE CENTER WALL Non-Final OA SK On Co., Ltd.
18578531 SLURRY COMPOSITION FOR ALL-SOLID-STATE BATTERY PRODUCTION AND METHOD FOR PRODUCING ALL-SOLID-STATE BATTERY Non-Final OA SEKISUI CHEMICAL CO., LTD.
18565121 ELECTRODE SHEET FOR LITHIUM ION SECONDARY BATTERY Non-Final OA Teijin Limited
18396080 PREFORMED INSERT FOR BATTERY MODULE Non-Final OA GM GLOBAL TECHNOLOGY OPERATIONS LLC
18086674 BATTERY Non-Final OA AESC Japan Ltd.

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