Prosecution Insights
Last updated: October 27, 2026

Jonathan G Leong, USPTO Patent Examiner

Listed by the USPTO as LEONG, JONATHAN G

Tech Center 4100 • Art Units: 1725 1751 1795 4162

This examiner grants 57% of resolved cases

Analysis

LEONG, JONATHAN G is associated with Tech Center 4100 and Art Unit 1725. The profile records 371 resolved cases, a 56.9% allowance rate, and a 15.5% interview lift. The median time to allowance is 1397 days. The allowance rate indicates that favorable outcomes are not routine in the reported record, and the timing figure points to a lengthy prosecution horizon.

The listed companies are Samsung SDI Co., Ltd., Daikin Industries Ltd., and Musashi Energy Solutions Co. Ltd. The listed firms are HDLS IPR SERVICES, Koivula & Somersalo LLC, and OBLON, MCCLELLAND, MAIER & NEUSTADT, L.L.P. Practitioners may benefit from early claim analysis, technically specific evidence, and defined interview objectives. The interview measure supports considering examiner contact, but it does not eliminate the need for a robust written response strategy or contingency planning.

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

Performance Statistics

56.9%
Allow Rate
-3.1% vs TC avg
385
Total Applications
+15.5%
Interview Lift
1397
Avg Prosecution Days
Based on 371 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
20.6%
§102 Novelty
56.3%
§103 Obviousness
17.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18348923 LITHIUM BATTERY AND PREPARATION METHOD THEREOF Non-Final OA Samsung SDI Co., Ltd.
17387361 STRUCTURE, COMPOSITE BODY, BATTERY AND METHOD FOR PRODUCING COMPOSITE BODY Final Rejection DAIKIN INDUSTRIES, LTD.

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Frequently Asked Questions

What is examiner Jonathan G Leong's allowance rate?

56.9% of resolved applications examined by Jonathan G Leong were allowed (371 resolved cases), compared with 65.5% across Art Unit 1725 over the last five years.

Does an interview help with examiner Jonathan G Leong?

This examiner's interview lift is +15.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Jonathan G Leong take to allow a patent?

Applications allowed by Jonathan G Leong took 1,397 days on average from filing to allowance.

Which art unit does examiner Jonathan G Leong work in?

Jonathan G Leong examines applications in Art Unit 1725 in Tech Center 4100.

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