Prosecution Insights
Last updated: October 26, 2026

Vincent M Cao, USPTO Patent Examiner

Listed by the USPTO as CAO, VINCENT M

Tech Center 4100 • Art Units: 3622 3624 3688 4100

This examiner grants 56% of resolved cases

Analysis

CAO, VINCENT M handles art unit 3622 in tech center 4100. Across 461 resolved cases, the allowance rate is 55.5% and the interview lift is 31.6%. The median days to allowance are 1281.

The listed companies are Lemon Inc., Coamix Inc., and Target Brands Inc. The listed firms are ALSTON & BIRD LLP, Astute IP Law Group, and BALLARD SPAHR LLP. The allowance record is mixed, while the interview lift is substantial. Practitioners may therefore benefit from preparing interviews that address specific claim obstacles, while maintaining realistic expectations about timing and allowance.

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

Performance Statistics

55.5%
Allow Rate
-4.5% vs TC avg
481
Total Applications
+31.6%
Interview Lift
1281
Avg Prosecution Days
Based on 461 resolved cases, 2023–2026

Rejection Statute Breakdown

38.1%
§101 Eligibility
7.7%
§102 Novelty
41.6%
§103 Obviousness
7.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19101520 RECOMMENDATION DIVERSITY EVALUATION Non-Final OA Lemon Inc.
18878833 METHOD AND APPARATUS FOR RETURN EVALUATION, DEVICE AND STORAGE MEDIUM Non-Final OA Lemon Inc.
19379108 DRIVE UP INCENTIVIZATION ENGINE IN AN ORDER FULFILLMENT SYSTEM Non-Final OA Target Brands, Inc.
18765846 CONFIGURABLE RELEVANCE SERVICE PLATFORM INCORPORATING A RELEVANCE TEST DRIVER Non-Final OA Bytedance Inc.
19053081 APPARATUSES, COMPUTER-IMPLEMENTED METHODS, AND COMPUTER PROGRAM PRODUCTS FOR GENERATING FUELING PLANS TO REDUCE GREENHOUSE GAS IMPACT Final Rejection HONEYWELL INTERNATIONAL INC.

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Frequently Asked Questions

What is examiner Vincent M Cao's allowance rate?

55.5% of resolved applications examined by Vincent M Cao were allowed (461 resolved cases), compared with 24.1% across Art Unit 3622 over the last five years.

Does an interview help with examiner Vincent M Cao?

This examiner's interview lift is +31.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Vincent M Cao take to allow a patent?

Applications allowed by Vincent M Cao took 1,281 days on average from filing to allowance.

Which art unit does examiner Vincent M Cao work in?

Vincent M Cao examines applications in Art Unit 3622 in Tech Center 4100.

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