Prosecution Insights
Last updated: October 26, 2026

Don Gordon Zhao, USPTO Patent Examiner

Listed by the USPTO as ZHAO, DON GORDON

Tech Center 2400 • Art Units: 2124 2407 2431 2439 2493

This examiner grants 87% of resolved cases

Analysis

ZHAO, DON GORDON has resolved 805 cases in Tech Center 2400 and Art Unit 2124. The allowance rate is 87.3%, while the interview lift is 16.2%. The median time to allowance is 805 days. The substantial record shows a high allowance rate and a relatively limited interview effect, indicating that applicants may prioritize clear written distinctions and technically grounded claim amendments.

The principal companies are Intel Corporation, Capital One Services LLC, and International Business Machines Corporation. The leading firms are CENTRAL CALIFORNIA IP GROUP, P.C., Compass IP Law PC, and DENTONS Durham Jones Pinegar. These associations identify recurring participants with relevant experience before this examiner.

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

Performance Statistics

87.3%
Allow Rate
+29.3% vs TC avg
820
Total Applications
+16.2%
Interview Lift
805
Avg Prosecution Days
Based on 805 resolved cases, 2023–2026

Rejection Statute Breakdown

12.7%
§101 Eligibility
4.6%
§102 Novelty
43.3%
§103 Obviousness
27.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19220760 SIGN-UP AUTHENTICATION Non-Final OA Capital One Services, LLC
18217445 METHOD AND APPARATUS TO REDUCE PERFORMANCE OVERHEAD ASSOCIATED WITH THE USE OF KYBER FOR SECURE KEY EXCHANGE Non-Final OA Intel Corporation
18217453 SYSTEM AND METHOD FOR AUTHENTICATING EXTENDED SERVICE MICROCODE UPDATES Non-Final OA Intel Corporation
18331976 MULTI-FACTOR AUTHENTICATION HARDENING Non-Final OA INTERNATIONAL BUSINESS MACHINES CORPORATION

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Frequently Asked Questions

What is examiner Don Gordon Zhao's allowance rate?

87.3% of resolved applications examined by Don Gordon Zhao were allowed (805 resolved cases), compared with 63.1% across Art Unit 2124 over the last five years.

Does an interview help with examiner Don Gordon Zhao?

This examiner's interview lift is +16.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Don Gordon Zhao take to allow a patent?

Applications allowed by Don Gordon Zhao took 805 days on average from filing to allowance.

Which art unit does examiner Don Gordon Zhao work in?

Don Gordon Zhao examines applications in Art Unit 2124 in Tech Center 2400 (Networking & Security).

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