Prosecution Insights
Last updated: October 02, 2026

Examiner: ZHANG, LESHUI

Tech Center 2600 • Art Units: 2614 2654 2695

This examiner grants 78% of resolved cases

Analysis

Leshui Zhang is an examiner in Tech Center 2600 and Art Unit 2614. He has 954 resolved cases. The allowance rate for these cases is 77.9%. This percentage is a metric for practitioners to consider during prosecution. The interview lift is 35.3%. This lift shows the change in allowance probability when an interview occurs. The median days to allowance is 1011. This duration is the time for an allowed application.

With 954 resolved cases, the data provides a basis for strategy. The 35.3% interview lift is a metric for those seeking to change their results. Practitioners should factor the 1011-day timeline into their planning. The 77.9% allowance rate reflects the examiner's record in Tech Center 2600 and Art Unit 2614. The examiner's history shows a pattern of outcomes. Direct communication through the interview process is associated with the lift. The Art Unit environment is associated with these metrics. The duration of prosecution is a factor in strategy. The Tech Center context is relevant for understanding the trends.

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

Performance Statistics

77.9%
Allow Rate
+15.9% vs TC avg
986
Total Applications
+35.3%
Interview Lift
1011
Avg Prosecution Days
Based on 954 resolved cases, 2023–2026

Rejection Statute Breakdown

5.8%
§101 Eligibility
14.4%
§102 Novelty
44.8%
§103 Obviousness
29.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18614555 OWN VOICE AUDIO PROCESSING FOR HEARING LOSS Final Rejection Apple Inc.
18986136 SPEAKER SYSTEM Non-Final OA ALPS ALPINE CO., LTD.
19001350 VOICE RECOGNITION NOTETAKER Non-Final OA Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
18944964 TIME-DOMAIN STEREO PARAMETER ENCODING METHOD AND RELATED PRODUCT Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18958655 ACCELEROMETER-BASED ENDPOINTING MEASURE(S) AND /OR GAZE-BASED ENDPOINTING MEASURE(S) FOR SPEECH PROCESSING Non-Final OA GOOGLE LLC
18734803 AUGMENTING CONFORMERS WITH STRUCTURED STATE-SPACE SEQUENCE MODELS FOR ONLINE SPEECH RECOGNITION Non-Final OA GOOGLE LLC
18985145 PROACTIVE SUPPLEMENTAL CONTENT OUTPUT Non-Final OA Amazon Technologies, Inc.
18400081 AUDIO SIGNAL RENDERING METHOD AND APPARATUS, AND ELECTRONIC DEVICE Non-Final OA BEIJING ZITIAO NETWORK TECHNOLOGY CO., LTD.
18672139 Spatial Audio Parameter Merging Final Rejection Nokia Technologies Oy
18750477 Systems And Methods For Generative Language Model Database System Communication Channel Integration Final Rejection Salesforce, Inc.
18736332 GENERATIVE AI WITH LOGICAL REASONING Final Rejection NVIDIA CORPORATION
19012706 METHOD, APPARATUS OR SYSTEMS FOR PROCESSING AUDIO OBJECTS Non-Final OA Dolby International AB
17921858 METHOD, APPARATUS AND SYSTEM FOR ENHANCING MULTI-CHANNEL AUDIO IN A DYNAMIC RANGE REDUCED DOMAIN Final Rejection Dolby International AB
19000930 Method of Processing Sound, Sound Processing Apparatus, and Non-Transitory Computer-Readable Storage Medium Non-Final OA YAMAHA CORPORATION
18824518 NATURAL LANGUAGE INTERFACE FOR IDENTITY MANAGEMENT DATA MINING USING GENERATIVE AI Final Rejection OKTA, INC.
18941768 AUTOMATED TRANSLATION OF DESIGN SPECIFICATIONS OF ELECTRONIC CIRCUITS Non-Final OA Synopsys, Inc.

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