Prosecution Insights
Last updated: October 04, 2026

Examiner: YU, MISOOK

Tech Center 1600 • Art Units: 1600 1641 1642 1643 1644 1647

This examiner grants 39% of resolved cases

Analysis

Misook Yu, working in Technology Center 1600 and Art Unit 1600, has overseen 236 resolved cases. The allowance rate is 39.0 percent, which suggests a specific examination process. A data point is the median days to allowance of 4552, representing the prosecution cycle for applications that reach grant. The interview lift of 18.1 percent provides an opening for applicants. While the grant rate is 39.0 percent, the impact of interviews suggests that clarifying technical nuances can overcome rejections.

Practitioners must prepare for a commitment over the 4552-day median when navigating this examiner's docket. With 236 cases resolved, the data reflects the path for those seeking patent protection in this art unit. The 18.1 percent lift indicates that verbal advocacy is a step to improve the baseline probability of success. These metrics allow for strategic planning regarding the time and effort required to secure an allowance in this technology center.

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

Performance Statistics

39.0%
Allow Rate
-21.0% vs TC avg
251
Total Applications
+18.1%
Interview Lift
4552
Avg Prosecution Days
Based on 236 resolved cases, 2023–2026

Rejection Statute Breakdown

3.3%
§101 Eligibility
24.2%
§102 Novelty
32.3%
§103 Obviousness
25.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18006294 METHODS FOR THE USE OF A PD-1 X CTLA-4 BISPECIFIC MOLECULE Non-Final OA MACROGENICS, INC.
18274152 Genetically Modified Hepatocyte Populations Non-Final OA Cytotheryx, Inc.
18256242 ADMINISTRATION OF ANTI-TUMOR VACCINES Non-Final OA ASTHRA, LLC

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