Prosecution Insights
Last updated: October 01, 2026

Examiner: SOHN, SEUNG C

Tech Center 2800 • Art Units: 2878 2893

This examiner grants 87% of resolved cases

Analysis

Seung C. Sohn is an examiner in Tech Center 2800 and Art Unit 2878. The examiner has resolved 839 cases and maintains an allowance rate of 87.1 percent. This 87.1 percent rate indicates the frequency of patent grants. The median days to allowance is 870, which is the timeline for the 839 cases in the data set. This 870-day period is a factor for applicants to consider when planning their prosecution strategy.

The interview lift is 9.0 percent, showing a positive correlation between interviews and allowance. This 9.0 percent lift is an increase over the 87.1 percent baseline allowance rate. Practitioners can use interviews as a tool to further improve the probability of success. The 870-day median pendency provides a clear expectation for the duration of the process. The data indicates that verbal advocacy is a positive factor relative to the 87.1 percent allowance rate.

With 839 cases resolved, the 87.1 percent allowance rate and 870-day median timeline are well-supported. The 9.0 percent interview lift is a metric for refining prosecution strategy in Art Unit 2878. These figures characterize an examiner who is efficient in granting patents and help in managing expectations for the duration of the process.

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

Performance Statistics

87.1%
Allow Rate
+19.1% vs TC avg
842
Total Applications
+9.0%
Interview Lift
870
Avg Prosecution Days
Based on 839 resolved cases, 2023–2026

Rejection Statute Breakdown

4.1%
§101 Eligibility
51.0%
§102 Novelty
25.1%
§103 Obviousness
14.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18800458 SOLID-STATE IMAGING APPARATUS AND METHOD FOR MANUFACTURING THE SOLID-STATE IMAGING APPARATUS HAVING SEALING PORTION DISPOSED IN BONDED MEMBERS Final Rejection CANON KABUSHIKI KAISHA

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