Prosecution Insights
Last updated: October 26, 2026

Yi Hao, USPTO Patent Examiner

Listed by the USPTO as HAO, YI

Tech Center 4100 • Art Units: 2187 2188 3761 4100

This examiner grants 35% of resolved cases

Analysis

HAO, YI is assigned to Tech Center 4100 and Art Unit 2187. The profile covers 54 resolved cases, with an allowance rate of 35.2% and a median of 1399 days to allowance. The 48.2% interview lift indicates that interviews are associated with a materially higher allowance outcome in this record.

The listed company activity centers on Halliburton Energy Services Inc., Schlumberger Technology Corporation, and BOE Technology Group Co., Ltd. The principal firms are Artegis Law Group, LLP, Dority & Manning, P.A. and GEC-Aviation, and HAMILTON, BROOK, SMITH & REYNOLDS, P.C. Given the combination of a low allowance rate, long median timeline, and positive interview lift, counsel may place particular emphasis on interview preparation and follow-up.

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

Performance Statistics

35.2%
Allow Rate
-24.8% vs TC avg
85
Total Applications
+48.2%
Interview Lift
1399
Avg Prosecution Days
Based on 54 resolved cases, 2023–2026

Rejection Statute Breakdown

32.4%
§101 Eligibility
4.5%
§102 Novelty
36.5%
§103 Obviousness
22.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17817697 DRILLING OPERATIONS FRICTION FRAMEWORK Final Rejection Schlumberger Technology Corporation
17544325 SYSTEM AND METHOD FOR AUTOMATED IDENTIFICATION OF MUD MOTOR DRILLING MODE Final Rejection Halliburton Energy Services, Inc.
18552435 METHOD OF VERIFYING PROCESS DATA OF DISPLAY PANEL, METHOD OF MANUFACTURING DISPLAY PANEL AND ELECTRONIC DEVICE Non-Final OA BOE TECHNOLOGY GROUP CO., LTD.
17337456 MACHINE-LEARNING DEVICE, MACHINE-LEARNING METHOD, DATA GENERATION DEVICE, DATA GENERATION METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM FOR PROGRAM Final Rejection FUJITSU LIMITED
17568269 SYSTEMS AND METHODS FOR REDUCING EMISSIONS WITH A FUEL CELL Final Rejection General Electric Company
18546132 MACHINE LEARNING WORKFLOW TO PREDICT SANDING EVENTS Non-Final OA CHEVRON U.S.A. INC.
17706068 METHOD AND SYSTEM FOR AUTOMATED DESIGN GENERATION FOR ADDITIVE MANUFACTURING UTILIZING MACHINE LEARNING BASED SURROGATE MODEL FOR CRACKING Non-Final OA XEROX CORPORATION

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Frequently Asked Questions

What is examiner Yi Hao's allowance rate?

35.2% of resolved applications examined by Yi Hao were allowed (54 resolved cases), compared with 75.9% across Art Unit 2187 over the last five years.

Does an interview help with examiner Yi Hao?

This examiner's interview lift is +48.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Yi Hao take to allow a patent?

Applications allowed by Yi Hao took 1,399 days on average from filing to allowance.

Which art unit does examiner Yi Hao work in?

Yi Hao examines applications in Art Unit 2187 in Tech Center 4100.

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