Prosecution Insights
Last updated: October 01, 2026

Examiner: RO, YONG-SUK

Tech Center 3600 • Art Units: 3672 3676

This examiner grants 86% of resolved cases

Analysis

Yong-Suk Ro serves in Tech Center 3600 and Art Unit 3672. He has a high volume of 1287 resolved cases. His allowance rate is 85.5 percent. The interview lift is 7.7 percent. This indicates that while interviews provide a small benefit, the examiner is already very likely to allow cases. The median days to allowance is 840.

With 1287 resolved cases, the 85.5 percent allowance rate is a highly reliable and favorable metric. The 840 median days suggest a very fast path to patent grant. Practitioners should find this a very efficient environment for prosecution. The 1287 resolved cases make these statistics highly reliable. The 85.5 percent allowance rate is a key highlight for applicants in this art unit.

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

Performance Statistics

85.5%
Allow Rate
+33.5% vs TC avg
1,312
Total Applications
+7.7%
Interview Lift
840
Avg Prosecution Days
Based on 1287 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
32.0%
§102 Novelty
33.2%
§103 Obviousness
25.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19244983 BLUNT-NOSED ROLLER CONE HYBRID BIT Non-Final OA Schlumberger Technology Corporation
18306467 ASYMMETRIC ANCHORING RIDGE DESIGN FOR EXPANDABLE LINER HANGER Non-Final OA Halliburton Energy Services, Inc.
17833656 ISOLATION SLEEVE WITH HIGH-EXPANSION SEALS FOR PASSING THROUGH SMALL RESTRICTIONS Non-Final OA Halliburton Energy Services, Inc.
18422623 ELECTROMAGNETIC TELEMETRY GAP SUB Final Rejection Baker Hughes Oilfield Operations LLC

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