Prosecution Insights
Last updated: October 26, 2026

David R Byrnes, USPTO Patent Examiner

Listed by the USPTO as BYRNES, DAVID R

Tech Center 1600 • Art Units: 1662

This examiner grants 78% of resolved cases

Analysis

BYRNES, DAVID R handles matters in USPTO Technology Center 1600 and art unit 1662. The record reports 248 resolved cases and a 78.2% allowance rate. The median time to allowance is 909 days, which gives applicants a meaningful planning horizon for examination, continuation practice, and coordination with agricultural technology programs.

The reported interview lift is 20.9%. The listed companies are Pioneer Hi-bred International Inc., Syngenta AG, and Enza Zaden Beheer B.V. FOLEY HOAG, LLP (General), BELL & ASSOCIATES, and DENTONS US LLP are the identified firms. The concentration in plant and agricultural applicants makes precise treatment of biological and technical features important. Practitioners should use written support and interviews together to protect commercially relevant claim distinctions.

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

Performance Statistics

78.2%
Allow Rate
+18.2% vs TC avg
289
Total Applications
+20.9%
Interview Lift
909
Avg Prosecution Days
Based on 248 resolved cases, 2023–2026

Rejection Statute Breakdown

4.9%
§101 Eligibility
17.7%
§102 Novelty
22.1%
§103 Obviousness
47.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19042038 SOYBEAN VARIETY Non-Final OA SYNGENTA CROP PROTECTION AG
18940186 WHEAT VARIETY RNP16DC10044901 Final Rejection Syngenta Crop Protection AG

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Frequently Asked Questions

What is examiner David R Byrnes's allowance rate?

78.2% of resolved applications examined by David R Byrnes were allowed (248 resolved cases), compared with 63.0% across Art Unit 1662 over the last five years.

Does an interview help with examiner David R Byrnes?

This examiner's interview lift is +20.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner David R Byrnes take to allow a patent?

Applications allowed by David R Byrnes took 909 days on average from filing to allowance.

Which art unit does examiner David R Byrnes work in?

David R Byrnes examines applications in Art Unit 1662 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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