Prosecution Insights
Last updated: October 27, 2026

Andrew B. Sue-Ako, USPTO Patent Examiner

Listed by the USPTO as SUE-AKO, ANDREW B.

Tech Center 3600 • Art Units: 3674 3676

This examiner grants 72% of resolved cases

Analysis

SUE-AKO, ANDREW B. is assigned to tech center 3600 and art unit 3674. The profile covers 747 resolved cases, an allowance rate of 71.5%, and a median of 797 days to allowance. The substantial record indicates generally favorable outcomes, while the median points to a prosecution timeline that is shorter than a number of extended examination records and may support more predictable portfolio scheduling.

Interviews are associated with a 27.7% lift, giving direct discussion a meaningful role in prosecution strategy. Halliburton Energy Services Inc., Saudi Arabian Oil Company, and Lear Corporation are the listed companies. SUGHRUE MION, PLLC, Dunlap Bennett & Ludwig PLLC, and FERGUSON CASE ORR PATERSON LLP are the listed firms.

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

Performance Statistics

71.5%
Allow Rate
+19.5% vs TC avg
775
Total Applications
+27.7%
Interview Lift
797
Avg Prosecution Days
Based on 747 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
21.2%
§102 Novelty
44.4%
§103 Obviousness
24.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19210530 METHOD FOR PLACING NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS Final Rejection Halliburton Energy Services, Inc.
19210415 NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS Final Rejection Halliburton Energy Services, Inc.
19013106 SCALE INHIBITOR SQUEEZE TREATMENT SYSTEM AND METHOD OF USING THE SAME Non-Final OA Halliburton Energy Services, Inc.
19276804 TRACERS FOR PETROLEUM RESERVOIRS Final Rejection Saudi Arabian Oil Company
19272087 PROVIDING LOST CIRCULATION MATERIAL TO CURE FLUID LOSSES IN A WELL Non-Final OA Saudi Arabian Oil Company
18650920 PACKER FLUIDS INCLUDING ETHYLENE GLYCOL Non-Final OA Saudi Arabian Oil Company
19397413 STABILIZED CO2 FOAM COMPOSITIONS FOR SUBTERANEAN FRACTURING APPLICATIONS AND COMPOSITIONS RELATED THERETO Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM & MINERALS
18881884 Temporary Isolation System for Reservoirs Non-Final OA Baker Hughes Oilfield Operations LLC
19129389 SEAT AND ROCKING CHAIR INCLUDING THE SEAT Non-Final OA WONDERLAND SWITZERLAND AG
18685561 DRAG REDUCING AGENT Non-Final OA Dow Global Technologies LLC

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Frequently Asked Questions

What is examiner Andrew B. Sue-Ako's allowance rate?

71.5% of resolved applications examined by Andrew B. Sue-Ako were allowed (747 resolved cases), compared with 68.9% across Art Unit 3674 over the last five years.

Does an interview help with examiner Andrew B. Sue-Ako?

This examiner's interview lift is +27.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Andrew B. Sue-Ako take to allow a patent?

Applications allowed by Andrew B. Sue-Ako took 797 days on average from filing to allowance.

Which art unit does examiner Andrew B. Sue-Ako work in?

Andrew B. Sue-Ako examines applications in Art Unit 3674 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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