Prosecution Insights
Last updated: October 02, 2026

Examiner: KASAYAN, KATRIEL BARCELLANO

Tech Center 1700 • Art Units: 1600 1611 1634 1643 1773

This examiner grants 25% of resolved cases

Analysis

Examiner KATRIEL BARCELLANO KASAYAN is assigned to Tech Center 1700 and Art Unit 1600. The examiner has 4 resolved cases, which provides an initial view into the prosecution environment for this docket. These 4 resolved cases establish a preliminary set of metrics that may fluctuate as the examiner's docket grows.

The allowance rate is 25.0 percent. This 25.0 percent rate indicates the proportion of the 4 resolved cases that resulted in a patent grant. The interview lift is 0.0 percent, suggesting that interviews have not yet shown a statistical impact on the likelihood of success compared to the 25.0 percent baseline. Practitioners should monitor how this 0.0 percent lift develops as more cases reach a final disposition in Art Unit 1600.

The median days to allowance is 1207. This 1207 day timeframe is the median duration for applications that have successfully reached allowance. The 25.0 percent allowance rate and the 1207 day median provide the current benchmarks for Tech Center 1700. Applicants should be aware that these metrics are based on a small sample of 4 resolved cases.

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

Performance Statistics

25.0%
Allow Rate
-40.0% vs TC avg
25
Total Applications
+0.0%
Interview Lift
1207
Avg Prosecution Days
Based on 4 resolved cases, 2023–2026

Rejection Statute Breakdown

6.3%
§101 Eligibility
5.6%
§102 Novelty
48.3%
§103 Obviousness
32.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17802686 COMPOSITIONS, METHODS, KITS, AND SYSTEMS RELATING TO CHARGE-NEUTRAL MICROGELS FOR 3D CELL CULTURE AND PRINTING Non-Final OA University of Florida Research Foundation, Inc.
18292483 Methods of Improving Therapeutic Efficacy of Mesenchymal Stromal Cells for Treatment of Osteoarthritis Non-Final OA Emory University
18750595 METHOD OF CULTURING THREE-DIMENSIONAL CELLULAR TISSUES Non-Final OA TOPPAN HOLDINGS INC.
17308462 COMPOSITIONS AND METHODS RELATING TO REVERSIBLY COMPRESSIBLE TISSUE-HYDROGEL HYBRIDS Final Rejection Massachusetts Institute of Technology
18845476 INDUCED TOTIPOTENT POTENTIAL STEM CELLS, METHODS OF MAKING AND USING Non-Final OA Peking University
18838347 NEURAL PROGENITOR CELL COMPOSITIONS AND METHODS OF USING THE SAME Non-Final OA The General Hospital Corporation
17285908 COMPOSITIONS FOR AND METHODS OF PRODUCING TUMOR ORGANOIDS Non-Final OA BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
18014850 TDP-43 BIOSENSOR CELL LINES Final Rejection THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
18265796 METHODS OF INDUCING AN IMMUNOMODULATORY TUMOR RESPONSE Non-Final OA CORNELL UNIVERSITY
18341700 MATERIALS AND METHODS FOR PRODUCING BLOOD PRODUCTS Non-Final OA Cellphire, Inc.

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