Prosecution Insights
Last updated: October 02, 2026

Examiner: CHEA, PHILIP J

Tech Center 2400 • Art Units: 2153 2436 2453 2456 2492 2499

This examiner grants 68% of resolved cases

Analysis

Philip J. Chea, an examiner in Tech Center 2400, has a record of 183 resolved cases with an allowance rate of 67.8%. This rate indicates that more than two-thirds of applications in Art Unit 2153 reach allowance. However, the median time to allowance is 1478 days, which is a significant duration for applicants to consider. This 1478-day timeline suggests that while the probability of allowance is high, the path to reaching it may involve a lengthy prosecution period.

The interview lift for this examiner is 2.1%, which is relatively modest compared to the 67.8% allowance rate. This low lift suggests that interviews may not drastically change the outcome of a case, although they still contribute slightly to the overall success rate. Practitioners should weigh the 2.1% lift against the 1478-day median pendency when deciding whether to request an interview. The 183 resolved cases provide the data points necessary to evaluate these trends within Tech Center 2400.

Strategy in Art Unit 2153 should focus on the 67.8% allowance rate as a primary indicator of success. The 1478-day median time to allowance requires patience and sustained effort from the applicant. While the 2.1% interview lift is small, it remains a tool for addressing specific issues in the resolved cases that make up this examiner's portfolio.

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

Performance Statistics

67.8%
Allow Rate
+9.8% vs TC avg
192
Total Applications
+2.1%
Interview Lift
1478
Avg Prosecution Days
Based on 183 resolved cases, 2023–2026

Rejection Statute Breakdown

13.7%
§101 Eligibility
26.7%
§102 Novelty
48.2%
§103 Obviousness
7.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18294621 ATTACK ANALYSIS ASSISTANCE APPARATUS, ATTACK ANALYSIS ASSISTANCE METHOD, AND COMPUTER-READABLE RECORDING MEDIUM Final Rejection NEC Corporation
18657501 SECURITY MEASURE DETERMINATION DEVICE AND SECURITY MEASURE DETERMINATION METHOD Final Rejection Hitachi, Ltd.
18896393 ENCRYPTED WIRELESS NETWORK BEARER Non-Final OA T-MOBILE INNOVATIONS LLC

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