Prosecution Insights
Last updated: October 02, 2026

Examiner: TSAI, SHENG JEN

Tech Center 2400 • Art Units: 2136 2139 2186 2437

This examiner grants 70% of resolved cases

Analysis

Sheng Jen Tsai has resolved 804 cases in Art Unit 2136 of Tech Center 2400. The allowance rate is 70.4%, and the median time to allowance is 1227 days. These figures suggest a consistent prosecution environment with a reasonable chance of success for applications assigned to him. The 804 cases resolved indicate a high level of experience in this technical field.

The interview lift of 13.8% provides a helpful boost to the 70.4% allowance rate. While not as high as some other examiners, it remains a positive factor for the 804 cases resolved. The 1227-day median pendency suggests that practitioners should be prepared for a multi-year process. Direct engagement through an interview is a recommended tactic to improve the probability of a grant.

In Tech Center 2400, the 70.4% allowance rate is a solid baseline for applicants. The 13.8% interview lift suggests that the examiner is open to discussion and willing to resolve issues through direct communication. Practitioners should use the 1227-day median to allowance to set realistic timelines for their clients in Art Unit 2136.

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

Performance Statistics

70.4%
Allow Rate
+12.4% vs TC avg
829
Total Applications
+13.8%
Interview Lift
1226
Avg Prosecution Days
Based on 805 resolved cases, 2023–2026

Rejection Statute Breakdown

2.7%
§101 Eligibility
26.6%
§102 Novelty
54.2%
§103 Obviousness
13.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19028547 SEMICONDUCTOR MEMORY DEVICE AND A MEMORY SYSTEM INCLUDING THE SAME Final Rejection Samsung Electronics Co., Ltd.
18637710 SYSTEM AND METHOD FOR ADAPTIVE PREFETCH FOR MEMORY DEVICE Final Rejection Samsung Electronics Co., Ltd.
18421149 ELECTRONIC DEVICE AND METHOD WITH MEMORY OPERATION MODE CONTROL Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18497878 METADATA TABLE MANAGEMENT SCHEME FOR DATABASE CONSISTENCY Final Rejection SAMSUNG ELECTRONICS CO., LTD.
19224026 DATA PROCESSING SYSTEM AND METHOD, AND CONNECTION DEVICE Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18460608 MEMORY SHARING CONTROL METHOD AND DEVICE, COMPUTER DEVICE, AND SYSTEM Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18999689 SINGLE PASS FOOTPRINT COMPRESSION OPTIMIZATION Final Rejection QUALCOMM Incorporated
18405063 MEMORY SYSTEM AND OPERATION METHOD THEREOF Non-Final OA YANGTZE MEMORY TECHNOLOGIES CO., LTD.
18897840 MANAGING AND RANKING MEMORY RESOURCES Non-Final OA Microsoft Technology Licensing, LLC
19263285 STORAGE DEVICE MIGRATING USER DATA STORED IN MEMORY DIE IN AN UNUSABLE STATE Non-Final OA SK hynix Inc.
18086429 APPLICATION PROGRAMMING INTERFACE TO TRANSFORM AND STORE INFORMATION CORRESPONDING TO A MEMORY TRANSACTION Non-Final OA NVIDIA Corporation
19233614 SECURE WRITE PROTECTIONS FOR MEMORY SYSTEMS Final Rejection Micron Technology, Inc.
18689861 MEMORY MANAGEMENT METHOD FOR PSEUDO-FUNCTIONAL DIFFERENTIABLE PROGRAMMING Final Rejection Purdue Research Foundation

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