Prosecution Insights
Last updated: October 02, 2026

Examiner: BUFFINGTON, HEAVEN RICHELLE

Tech Center 3600 • Art Units: 2838 3615 3617 3647

This examiner grants 84% of resolved cases

Analysis

Heaven Richelle Buffington is an examiner in Tech Center 3600 and Art Unit 2838. The examiner has 110 resolved cases. The data shows an allowance rate of 83.6 percent, which represents the proportion of cases that result in a patent grant. For a practitioner, this 83.6 percent rate is a metric for evaluating the likelihood of success during prosecution.

The median days to allowance is 1258. This 1258 figure indicates the typical time required to reach a grant from the start of the process. Understanding the 1258 median days helps in setting expectations for the duration of the legal proceedings in Art Unit 2838.

Direct engagement with the examiner is associated with a change in outcomes. The interview lift is 13.4 percent, which shows the increase in the probability of allowance when an interview is conducted. Utilizing this 13.4 percent lift is an option for those navigating the 110 resolved cases handled by this examiner. The statistics from Tech Center 3600 provide a basis for planning future interactions.

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

Performance Statistics

83.6%
Allow Rate
+31.6% vs TC avg
132
Total Applications
+13.4%
Interview Lift
1258
Avg Prosecution Days
Based on 110 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
21.3%
§102 Novelty
41.5%
§103 Obviousness
32.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17969216 URBAN AIR MOBILITY POWER SUPPLY SYSTEM AND METHOD ACCORDING THERETO Non-Final OA KIA CORPORATION
18668851 CONTACTOR SELECTION TO OPEN UNDER LOAD Non-Final OA Caterpillar Inc.
18365103 CLAMP ASSEMBLY Final Rejection Transportation IP Holdings, LLC
18494055 SUBSTRATE TRANSFERRING APPARATUS AND SUBSTRATE TRANSFERRING METHOD Final Rejection SEMES CO., LTD.
18796926 METHOD AND SERVICE STATION FOR ADJUSTING A TRANSPORT UNIT Non-Final OA B&R Industrial Automation GmbH

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