Prosecution Insights
Last updated: October 27, 2026

Shirley X Zhang, USPTO Patent Examiner

Listed by the USPTO as ZHANG, SHIRLEY X

Tech Center 2400 • Art Units: 2431 2442 2444 2447

This examiner grants 70% of resolved cases

Analysis

ZHANG, SHIRLEY X has resolved 620 cases in Tech Center 2400 and Art Unit 2431. The allowance rate is 69.8%, while the interview lift is 14.2%. The median time to allowance is 1227 days. The record indicates allowances in a majority of resolved cases, with a more limited interview effect that may place greater emphasis on written prosecution positions.

The company portfolio includes Huawei Technologies Co., Ltd., Apple Inc., and Magic Leap Inc. The leading firms are Maschoff Brennan, MUNCK WILSON MANDALA L.L.P, and NIXON & VANDERHYE PC. Practitioners can use these associations to identify counsel and applicants with experience in this technology area.

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

Performance Statistics

69.8%
Allow Rate
+11.8% vs TC avg
647
Total Applications
+14.2%
Interview Lift
1227
Avg Prosecution Days
Based on 620 resolved cases, 2023–2026

Rejection Statute Breakdown

14.6%
§101 Eligibility
19.9%
§102 Novelty
43.8%
§103 Obviousness
13.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19111764 TECHNOLOGIES FOR CONGESTION DETECTION IN WIRELESS NETWORKS Non-Final OA Apple Inc.
18781800 USER DATA MANAGEMENT FOR AUGMENTED REALITY USING A DISTRIBUTED LEDGER Non-Final OA Magic Leap, Inc.
19193133 Communication Method, Communication Apparatus, and Computer-Readable Storage Medium Non-Final OA Huawei Technologies Co., Ltd.
19047713 COMMUNICATION METHOD AND COMMUNICATION APPARATUS Final Rejection HUAWEI TECHNOLOGIES CO., LTD.
18756755 PACKET TRANSMISSION METHOD, NETWORK DEVICE, AND SYSTEM Non-Final OA Huawei Technologies Co., Ltd.
19033951 USER AUTHENTICATION AT ACCESS CONTROL SERVER USING MOBILE DEVICE Final Rejection Visa International Service Association
18745384 METHOD AND SYSTEM FOR ENHANCING SECURITY ASSOCIATED WITH AN ARTIFICIAL INTELLIGENCE OPERATION AND IMPROVING PERFORMANCE Non-Final OA Marvell Asia Pte Ltd
19203042 GENERATING ACTION RECOMMENDATIONS BASED ON ATTRIBUTES ASSOCIATED WITH INCIDENTS USED FOR INCIDENT RESPONSE Non-Final OA Cisco Technology, Inc.
18541644 REACTIVE NETWORK SECURITY FOR A BUILDING AUTOMATION SYSTEM Final Rejection TRANE INTERNATIONAL INC.

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Frequently Asked Questions

What is examiner Shirley X Zhang's allowance rate?

69.8% of resolved applications examined by Shirley X Zhang were allowed (620 resolved cases), compared with 76.5% across Art Unit 2431 over the last five years.

Does an interview help with examiner Shirley X Zhang?

This examiner's interview lift is +14.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Shirley X Zhang take to allow a patent?

Applications allowed by Shirley X Zhang took 1,227 days on average from filing to allowance.

Which art unit does examiner Shirley X Zhang work in?

Shirley X Zhang examines applications in Art Unit 2431 in Tech Center 2400 (Networking & Security).

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