Prosecution Insights
Last updated: October 02, 2026

Examiner: SUN, DAVID ZHIJUN

Tech Center 4100 • Art Units: 2418 2472 2476 4100

This examiner grants 90% of resolved cases

Analysis

David Zhijun Sun serves as a patent examiner in Tech Center 4100, working within Art Unit 2418. The examiner has reached a resolution in 110 cases. The allowance rate for these cases is 90.0 percent. This 90.0 percent rate provides a measure of how often applications are granted. Practitioners can use this data to evaluate the probability of a favorable outcome when an application is assigned to this examiner.

The record shows an interview lift of 14.2 percent. This positive 14.2 percent lift indicates that applications involving an interview are more likely to be allowed than those that are not. This suggests that direct discussion with the examiner is a productive method for resolving issues. Practitioners should consider the 14.2 percent lift when deciding whether to request an interview during prosecution in Tech Center 4100.

The median days to allowance for this examiner is 1063. This 1063 figure represents the middle point of the time required to move from filing to a patent grant. With 110 resolved cases, this median offers a benchmark for the duration of the prosecution process. These figures assist in managing expectations for both the timing and the results of applications in Art Unit 2418.

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

Performance Statistics

90.1%
Allow Rate
+30.1% vs TC avg
135
Total Applications
+14.1%
Interview Lift
1061
Avg Prosecution Days
Based on 111 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
15.7%
§102 Novelty
63.6%
§103 Obviousness
16.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18500606 METHOD AND APPARATUS FOR SUBSCRIPTION OF UPF EVENT EXPOSURE SERVICE BASED ON UP Non-Final OA Samsung Electronics Co., Ltd.
18500911 COMMUNICATION APPARATUS, BASE STATION, AND COMMUNICATION METHOD Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
18848258 METHODS, DEVICES, AND COMPUTER READABLE MEDIUM FOR COMMUNICATION Non-Final OA NEC CORPORATION
18886217 ULTRA-WIDEBAND SIGNAL SYNCHRONIZATION METHOD AND COMMUNICATION APPARATUS Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18781465 DATA PROCESSING METHOD AND APPARATUS, AND RELATED DEVICE Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18832046 COMMUNICATION METHOD AND RELATED DEVICE Non-Final OA Huawei Technologies Co., Ltd.
18511688 COMMUNICATION METHOD AND COMMUNICATION APPARATUS Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18293767 Managing Radio Functions in the Inactive State Final Rejection GOOGLE LLC
18842012 DATA COLLECTION PROCEDURE AND MODEL TRAINING Non-Final OA QUALCOMM Incorporated
18602914 SIDELINK CARRIER AGGREGATION SET-UP, ACTIVATION, AND DEACTIVATION Final Rejection QUALCOMM Incorporated
18555128 INDICATION OF RECONFIGURABLE INTELLIGENT SURFACE PARTICIPATION IN A COMMUNICATION Non-Final OA QUALCOMM Incorporated
18558700 RADIO ACCESS NETWORK COMPUTING SERVICE SUPPORT WITH DISTRIBUTED UNITS Non-Final OA Intel Corporation
18177580 PREEMPTION FOR LOW LATENCY APPLICATION Non-Final OA Intel Corporation
18805895 METHODS AND DEVICES FOR COORDINATED UPLINK-BASED POSITIONING Non-Final OA Sony Group Corporation
18293747 BEAM ASSOCIATION FOR A FIXED FRAME PERIOD Final Rejection Lenovo (Singapore) Pte. Ltd.
18862775 TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION Non-Final OA NTT DOCOMO, INC.
18857398 TERMINAL, RADIO COMMUNICATION METHOD, AND BASE STATION Non-Final OA NTT DOCOMO, INC.
18398654 STRICT DETERMINISTIC SCHEDULING COORDINATION Final Rejection Nokia Technologies Oy
18900808 METHOD AND DEVICE FOR OBTAINING VALIDITY DURATION, AND READABLE STORAGE MEDIUM Non-Final OA VIVO MOBILE COMMUNICATION CO., LTD.
18651097 ACCESS POINT AND WIRELESS COMMUNICATION METHOD Final Rejection GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
18800814 LINK PATH PROCESSING METHOD AND DEVICE Final Rejection ZTE CORPORATION
18261813 DCI SENDING AND RECEIVING METHOD, DCI SENDING AND RECEIVING APPARATUS, NETWORK SIDE DEVICE AND TERMINAL Non-Final OA DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.

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