Prosecution Insights
Last updated: October 02, 2026

Examiner: HAM, JIEUN

Tech Center 1600 • Art Units: 1600 1643 1645 1652

This examiner grants 50% of resolved cases

Analysis

Jieun Ham is an examiner in Tech Center 1600, specifically within Art Unit 1600. The examiner has 8 resolved cases, which is a relatively small sample size for statistical analysis. The allowance rate is 50.0 percent, indicating the current frequency of patent grants for applications reaching a final disposition. This 50.0 percent rate provides a neutral starting point for practitioners assessing their chances of success in this art unit.

The median days to allowance for these cases is 1073. This timeline suggests that the prosecution process for successful applications typically lasts for a significant duration. The interview lift percentage is 8.8, indicating that interviews have a positive impact on the likelihood of allowance. While the 50.0 percent allowance rate is based on 8 resolved cases, the 8.8 percent lift suggests that engaging with the examiner can be a helpful step in the process. Practitioners in Tech Center 1600 should account for the 1073-day median pendency when planning their prosecution timelines. As the examiner handles more cases, these figures will provide a clearer picture of the long-term trends in Art Unit 1600.

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

Performance Statistics

50.0%
Allow Rate
-10.0% vs TC avg
27
Total Applications
+8.8%
Interview Lift
1054
Avg Prosecution Days
Based on 8 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
16.3%
§102 Novelty
31.3%
§103 Obviousness
29.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18565831 METHODS OF USING ANTI-CD83 CHIMERIC ANTIGEN RECEPTOR EXPRESSING T CELLS Non-Final OA Regents of the University of Minnesota
17773658 SMALL LIPID NANOPARTICLES, AND CANCER VACCINE INCLUDING SAME Non-Final OA KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
18699702 ENGINEERING NK CELLS WITH A CAR CONSTRUCT WITH OPTIMAL SIGNALING Non-Final OA BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
17611019 METHODS AND COMPOSITIONS FOR TREATING NON-SMALL CELL LUNG CANCER Non-Final OA Board of Regents, The University of Texas System
18698343 TREATMENT OF LUPUS Non-Final OA ASTRAZENECA AB
18033777 ENGINEERED NK CELLS Non-Final OA City of Hope
18420883 COMBINATIONS FOR TREATING CANCER Non-Final OA Purdue Pharma L.P.
18300302 ANTIBODIES THAT BIND PD-L1, PD-L2, AND/OR CD28 Non-Final OA Xencor, Inc.

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