Prosecution Insights
Last updated: October 27, 2026

Seung C Sohn, USPTO Patent Examiner

Listed by the USPTO as SOHN, SEUNG C

Tech Center 2800 • Art Units: 2878 2893

This examiner grants 87% of resolved cases

Analysis

SOHN, SEUNG C is assigned to Tech Center 2800 and Art Unit 2878. The data includes 840 resolved cases, an 87.1% allowance rate, and a median of 870 days to allowance. Interview lift is 9.0%, indicating a modest positive association between interviews and allowance outcomes.

Canon Inc., California Institute of Technology, and Nova Ltd. are the listed companies. Gates & Cooper LLP (General) and Knobbe, Martens, Olson & Bear, LLP are the listed firms. The broad resolved-case record supports practical examiner-specific preparation, while the allowance and timing measures provide a favorable basis for client counseling and prosecution scheduling.

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
848
Total Applications
+9.0%
Interview Lift
870
Avg Prosecution Days
Based on 840 resolved cases, 2023–2026

Rejection Statute Breakdown

4.1%
§101 Eligibility
51.2%
§102 Novelty
24.8%
§103 Obviousness
14.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19044485 PHOTOELECTRIC CONVERSION APPARATUS, PHOTOELECTRIC CONVERSION SYSTEM, AND MOVABLE BODY Non-Final OA CANON KABUSHIKI KAISHA
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
18819803 QUANTUM COHERENT RECEIVER Non-Final OA California Institute of Technology
18969428 IMAGE SENSOR SCHEME FOR OPTICAL AND ELECTRICAL IMPROVEMENT Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Seung C Sohn's allowance rate?

87.1% of resolved applications examined by Seung C Sohn were allowed (840 resolved cases), compared with 76.9% across Art Unit 2878 over the last five years.

Does an interview help with examiner Seung C Sohn?

This examiner's interview lift is +9.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Seung C Sohn take to allow a patent?

Applications allowed by Seung C Sohn took 870 days on average from filing to allowance.

Which art unit does examiner Seung C Sohn work in?

Seung C Sohn examines applications in Art Unit 2878 in Tech Center 2800 (Semiconductors, Circuits & Optics).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month