Prosecution Insights
Last updated: October 27, 2026

Risa Takenaka, USPTO Patent Examiner

Listed by the USPTO as TAKENAKA, RISA

Tech Center 1600 • Art Units: 1600 1632 1653 1682

This examiner grants 26% of resolved cases

Analysis

TAKENAKA, RISA examines cases in tech center 1600 and art unit 1600. The profile contains 23 resolved cases, an allowance rate of 26.1%, and a median of 1429 days to allowance. The interview lift is 100.0%, so the recorded outcomes associate interviews with a substantial change in allowance results.

Wisconsin Alumni Research Foundation, Merck Sharp & Dohme LLC, and National Tsing Hua University appear among the leading companies. The listed firms are LEYDIG VOIT & MAYER, LTD, BIRCH STEWART KOLASCH & BIRCH, LLP, and Clark+Elbing LLP. The limited case volume calls for caution when using the percentages as a forecasting tool, while the median timing supports early attention to prosecution duration.

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

Performance Statistics

26.1%
Allow Rate
-33.9% vs TC avg
65
Total Applications
+100.0%
Interview Lift
1429
Avg Prosecution Days
Based on 23 resolved cases, 2023–2026

Rejection Statute Breakdown

4.8%
§101 Eligibility
19.3%
§102 Novelty
34.9%
§103 Obviousness
34.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18613041 REAGENTS AND METHODS FOR PROMOTING ARTERIAL ENDOTHELIUM DIFFERENTIATION AND NITRIC OXIDE PRODUCTION Non-Final OA Wisconsin Alumni Research Foundation
17895068 CELL IDENTIFICATION METHOD Non-Final OA National Tsing Hua University
17611007 NEURAL CELL POPULATION, NEURAL CELL-CONTAINING PREPARATION, AND METHOD FOR PRODUCING SAID POPULATION AND PREPARATION Non-Final OA UNIVERSITY OF TSUKUBA
18339962 ENGINEERED CYCLIC PEPTIDES FOR ENHANCING VIRAL PRODUCTION Non-Final OA Synvivia, Inc.

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Frequently Asked Questions

What is examiner Risa Takenaka's allowance rate?

26.1% of resolved applications examined by Risa Takenaka were allowed (23 resolved cases), compared with 37.3% across Art Unit 1600 over the last five years.

Does an interview help with examiner Risa Takenaka?

This examiner's interview lift is +100.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Risa Takenaka take to allow a patent?

Applications allowed by Risa Takenaka took 1,429 days on average from filing to allowance.

Which art unit does examiner Risa Takenaka work in?

Risa Takenaka examines applications in Art Unit 1600 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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