Prosecution Insights
Last updated: October 01, 2026

Examiner: CANFIELD, ROBERT

Tech Center 3600 • Art Units: 3635 3636

This examiner grants 76% of resolved cases

Analysis

Robert Canfield operates within Tech Center 3600 and Art Unit 3635. He has managed 1165 resolved cases, achieving an allowance rate of 76.0 percent. The 1165 resolved cases provide a large data set for understanding his examination patterns. With an allowance rate of 76.0 percent, the majority of applications in this docket reach a grant. This 76.0 percent figure establishes a strong baseline for applicant expectations.

The data shows an interview lift of 18.1 percent, which points to the efficacy of direct communication during the prosecution process. Furthermore, the median days to allowance is 750. This 750-day timeline is a key factor for applicants to consider when managing their patent portfolios. When comparing the 18.1 percent interview lift to the 76.0 percent allowance rate, it is evident that interviews provide a meaningful boost to an already high probability of success. The 1165 cases and 750-day median suggest a consistent and well-established workflow.

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

Performance Statistics

76.0%
Allow Rate
+24.0% vs TC avg
1,188
Total Applications
+18.1%
Interview Lift
750
Avg Prosecution Days
Based on 1165 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
28.2%
§102 Novelty
28.8%
§103 Obviousness
34.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18839012 ATTACHMENT DEVICE FOR INSTALLING ON A VEHICLE ROOF Non-Final OA Thule Sweden AB
18311939 STEPLADDER WITH PLATFORM SPREADER Non-Final OA Tricam Industries, Inc.
18721408 A ROOFTOP TENT Final Rejection Rebecca GOODWIN

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