Prosecution Insights
Last updated: October 02, 2026

Examiner: ZHANG, LEI

Tech Center 3700 • Art Units: 3795 3798

This examiner grants 15% of resolved cases

Analysis

Lei Zhang is an examiner in Tech Center 3700 and Art Unit 3795. The examiner has 13 resolved cases. The allowance rate for these resolutions is 15.4%. This 15.4% rate is a starting point for practitioners to evaluate their chances. The interview lift is 100.0%. This 100.0% lift indicates the change in allowance probability when an interview occurs. The median days to allowance is 992. This 992-day median is the timeline for the allowed application.

With 13 resolved cases, the data is a preliminary set for analysis. The 100.0% interview lift is a metric for those planning their communication strategy. Practitioners should factor the 992-day timeline into their expectations for Art Unit 3795. The 15.4% allowance rate reflects the examiner's early record in Tech Center 3700. The history of 13 cases shows the current state of prosecution. Direct communication through the interview process is associated with the 100.0% lift. The Art Unit environment is defined by these metrics. The duration of prosecution is a factor in the overall strategy. The Tech Center context is relevant for understanding the initial trends.

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

Performance Statistics

15.4%
Allow Rate
-54.6% vs TC avg
64
Total Applications
+100.0%
Interview Lift
992
Avg Prosecution Days
Based on 13 resolved cases, 2023–2026

Rejection Statute Breakdown

11.5%
§101 Eligibility
12.3%
§102 Novelty
54.5%
§103 Obviousness
21.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18386016 ELECTRONIC DEVICE INCLUDING SENSOR MODULE Final Rejection Samsung Electronics Co., Ltd.
17968282 WEARABLE ELECTRONIC DEVICE INCLUDING BIOMETRIC SENSOR FOR MEASURING BODY TEMPERATURE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18539048 USER INTERFACE FOR SURGICAL ROBOTIC SYSTEM Final Rejection PROCEPT BioRobotics Corporation
19208501 ULTRASOUND PROBE Final Rejection FUJIFILM Corporation
18599936 WEARABLE COMPUTING DEVICE, SYSTEMS, AND METHOD FOR MEASURING SKIN AUTOFLUORESCENCE WITH AN OPTICAL SENSOR Non-Final OA Google LLC
19208794 MEDICAL INFORMATION PROCESSING DEVICE, ULTRASONIC DIAGNOSIS DEVICE, AND NON-TRANSITORY COMPUTER READABLE MEDIUM Non-Final OA Canon Kabushiki Kaisha
18850306 ULTRASOUND SYSTEM WITH CUSTOMIZATION UNIT Final Rejection KONINKLIJKE PHILIPS N.V.
19058126 Patient Seat and Magnetic Resonance Device Final Rejection Siemens Healthineers AG
19100561 Systems and Methods for Transcranial Focused Ultrasound Neurostimulation Final Rejection The Board of Trustees of the Leland Stanford Junior University
18081452 MEDICAL APPARATUS, METHOD FOR RECORDING A MODEL DATASET, DATA PROCESSING PROGRAM, AND PROGRAM MEMORY MEDIUM Non-Final OA Aesculap AG
19312089 INFRARED SENSOR-BASED NANOMAGNETIC PARTICLE MEDICAL IMAGING DEVICE USING EXOTHERMIC REACTION OF PARAMAGNETIC IRON OXIDE PARTICLES, AND OPERATION METHOD THEREOF Non-Final OA Electronics and Telecommunications Research Institute
18444514 DEEP TISSUE IN VIVO PRINTING Final Rejection California Institute of Technology
18353270 MULTI-BONE PREDICTION FOR ORTHOPAEDIC PROCEDURES Non-Final OA ARTHREX, INC.
19003311 COMPUTER PROGRAM, INFORMATION PROCESSING APPARATUS, AND INFORMATION PROCESSING METHOD Final Rejection TERUMO KABUSHIKI KAISHA
18337155 DEVICE AND METHOD FOR DETECTION Final Rejection Wistron Corp.
18524365 CATHETER AND METHOD FOR PRODUCING SUCH A CATHETER Non-Final OA B. Braun Melsungen AG
19108257 MEDICAL INTERVENTIONAL CATHETER Non-Final OA SHANGHAI MICROPORT MEDICAL (GROUP) CO., LTD.
18356696 Method and System for Distinguishing Between Stone and Tissue with a Laser Non-Final OA LUMENIS LTD.
18074473 DEVICES AND METHODS FOR TREATING LUNG TUMORS Non-Final OA TAU MEDICAL INC
18858953 METHOD AND APPARATUS FOR MAGNETIC RESONANCE (MR) CONTRAST AGENTS Final Rejection Wayne State University
18105059 METHOD FOR IMPROVING BEHAVIORAL DEFICITS OF SUBJECT AT RISK FOR OR IN EARLY STAGE OF ALZHEIMER DISEASE OR OTHER NEURODEGENERATIVE DISEASES Non-Final OA Naval Medical Research Center

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