Prosecution Insights
Last updated: October 02, 2026

Examiner: CHAI, LONGBIT

Tech Center 2400 • Art Units: 2131 2431

This examiner grants 88% of resolved cases

Analysis

Longbit Chai is an examiner in Tech Center 2400 and Art Unit 2131. The data includes 761 resolved cases. The allowance rate is 87.9 percent, which indicates the frequency of granted patents. The median days to allowance is 990, serving as a benchmark for the duration of the grant process. This 990 day figure is a key timing metric for applicants.

The interview lift is 31.2 percent. This figure suggests that an interview is associated with a 31.2 percent change in the probability of allowance. With 761 resolved cases, this lift provides a look at the impact of verbal communication. The 87.9 percent allowance rate and the 990 median days to allowance are the primary figures for developing a prosecution strategy.

The Art Unit 2131 designation and the Tech Center 2400 location form the basis for the current statistical profile. The 87.9 percent allowance rate provides a baseline for success, while the 31.2 percent interview lift highlights the impact of direct negotiation. These 761 resolved cases define the current data for this examiner.

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

Performance Statistics

87.9%
Allow Rate
+29.9% vs TC avg
772
Total Applications
+31.2%
Interview Lift
990
Avg Prosecution Days
Based on 761 resolved cases, 2023–2026

Rejection Statute Breakdown

16.0%
§101 Eligibility
35.0%
§102 Novelty
41.7%
§103 Obviousness
6.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18984855 MANAGED ATTESTATION SERVICE FOR COMPUTE INSTANCES Non-Final OA Amazon Technologies, Inc.
19053216 ARTIFICIAL INTELLIGENCE BASED ANALYST AS AN EVALUATOR Non-Final OA Darktrace Holdings Limited
19043692 Distributed Worker Pool for Crawling Data Stored in the Cloud Non-Final OA Zscaler, Inc.
19092193 SYSTEMS AND METHODS FOR FINE GRAINED FORWARD TESTING FOR A ZTNA ENVIRONMENT Non-Final OA Fortinet, Inc.

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