Prosecution Insights
Last updated: October 27, 2026

Katriel Barcellano Kasayan, USPTO Patent Examiner

Listed by the USPTO as KASAYAN, KATRIEL BARCELLANO

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

This examiner grants 25% of resolved cases

Analysis

Katriel Barcellano Kasayan has resolved 4 cases in Art Unit 1600, resulting in a 25.0% allowance rate. This resolution took a median of 1207 days to reach allowance within Tech Center 1700. The interview lift pct is currently 0.0%, suggesting that interviews have not yet impacted the success rate for these early cases.

Companies such as University of Florida Research Foundation Inc., Board of Regents of the University of Texas System, and Massachusetts Institute of Technology are listed among the top entities. Firms like ALSTON & BIRD LLP, TROUTMAN PEPPER LOCKE LLP, and BIOTECH BEACH LAW PC have handled prosecution in this profile.

With only 4 resolved cases, the 25.0% allowance rate and 1207-day median pendency offer a preliminary view of the prosecution environment. The 0.0% interview lift pct indicates that applicants have yet to find a statistical advantage through verbal negotiation. Practitioners should prepare for a potentially lengthy process given the current 1207-day timeline.

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
35
Total Applications
+0.0%
Interview Lift
1207
Avg Prosecution Days
Based on 4 resolved cases, 2023–2026

Rejection Statute Breakdown

6.4%
§101 Eligibility
7.1%
§102 Novelty
40.5%
§103 Obviousness
38.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18331891 DIRECT CONVERSION OF HUMAN MESENCHYMAL STEM CELLS TO HUMAN CARDIOMYOCYTES Final Rejection UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INCORPORATED
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.
17308462 COMPOSITIONS AND METHODS RELATING TO REVERSIBLY COMPRESSIBLE TISSUE-HYDROGEL HYBRIDS Final Rejection Massachusetts Institute of Technology
18838347 NEURAL PROGENITOR CELL COMPOSITIONS AND METHODS OF USING THE SAME Non-Final OA The General Hospital Corporation
18689676 METHOD FOR IMPROVING GENOME EDITING Final Rejection The Regents of the University of California
18750595 METHOD OF CULTURING THREE-DIMENSIONAL CELLULAR TISSUES Non-Final OA TOPPAN HOLDINGS INC.
18171415 METHOD FOR PRODUCING THREE-DIMENSIONAL CELL STRUCTURE, AND THREE-DIMENSIONAL CELL STRUCTURE Non-Final OA TOPPAN Inc.
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
18708777 MATERIALS AND METHODS FOR SLC6A1 GENE THERAPY Non-Final OA RESEARCH INSTITUTE AT NATIONWIDE CHILDREN'S HOSPITAL
18705554 METHOD OF MOUNTING A BIOLOGICAL SAMPLE ON A SURFACE Final Rejection RESOLVE BIOSCIENCES GMBH

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Frequently Asked Questions

What is examiner Katriel Barcellano Kasayan's allowance rate?

25.0% of resolved applications examined by Katriel Barcellano Kasayan were allowed (4 resolved cases), compared with 37.3% across Art Unit 1600 over the last five years.

Does an interview help with examiner Katriel Barcellano Kasayan?

This examiner's interview lift is +0.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Katriel Barcellano Kasayan take to allow a patent?

Applications allowed by Katriel Barcellano Kasayan took 1,207 days on average from filing to allowance.

Which art unit does examiner Katriel Barcellano Kasayan work in?

Katriel Barcellano Kasayan examines applications in Art Unit 1600 in Tech Center 1700 (Chemistry & Materials).

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