Prosecution Insights
Last updated: October 01, 2026

Examiner: ZHEN, LI B

Tech Center 2100 • Art Units: 2121 2194 2197

This examiner grants 54% of resolved cases

Analysis

Li B Zhen is an examiner in Tech Center 2100, specifically Art Unit 2121. The examiner has 168 resolved cases and an allowance rate of 54.2 percent. This rate indicates the frequency at which applications reach allowance. The percentage is a metric for strategy.

The interview lift of 39.9 percent is a factor for success. This lift suggests that an interview is an effective way to improve the 54.2 percent allowance rate. For applications in Art Unit 2121, engaging the examiner directly appears to be a productive strategy based on the recorded lift.

The median days to allowance is 1881. This 1881-day figure is a metric for applicants to consider. With 168 resolved cases, the recorded lift is established in the data. The median highlights the importance of using every tool to navigate the process in Tech Center 2100.

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

Performance Statistics

54.2%
Allow Rate
-0.8% vs TC avg
174
Total Applications
+39.9%
Interview Lift
1881
Avg Prosecution Days
Based on 168 resolved cases, 2023–2026

Rejection Statute Breakdown

21.0%
§101 Eligibility
8.5%
§102 Novelty
52.9%
§103 Obviousness
11.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17823148 FEDERATED AUTOMATIC MACHINE LEARNING Final Rejection International Business Machines Corporation
17546022 INTEGRATED AI PLANNERS AND RL AGENTS THROUGH AI PLANNING ANNOTATION IN RL Final Rejection INTERNATIONAL BUSINESS MACHINES CORPORATION
17457684 ACCELERATING DECISION TREE INFERENCES BASED ON TENSOR OPERATIONS Final Rejection International Business Machines Corporation
17883784 AI-BASED SELECTION USING CASCADED MODEL EXPLANATIONS Final Rejection Bank of America Corporation
17547166 COMPUTER SYSTEM FOR MULTI-SOURCE DOMAIN ADAPTATIVE TRAINING BASED ON SINGLE NEURAL NETWORK WITHOUT OVERFITTING AND METHOD THEREOF Final Rejection Korea Advanced Institute of Science and Technology

Facing This Examiner?

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

Build Your Strategy

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