Prosecution Insights
Last updated: October 04, 2026

Examiner: LEE, CHEUKFAN

Tech Center 2600 • Art Units: 2625 2673 2674 2676 2682 2683

This examiner grants 81% of resolved cases

Analysis

Cheukfan Lee is an examiner in Art Unit 2625, which is part of Tech Center 2600. He has 716 resolved cases, providing a substantial amount of data for analysis. The allowance rate for this examiner is 80.6 percent, which is a favorable and encouraging figure for patent applicants. The interview lift is 7.1 percent, suggesting that direct communication can provide a modest boost to the probability of allowance. This 7.1 percent lift is a useful strategic tool for practitioners to consider during prosecution.

The median time to allowance is 960 days, which is under the three-year mark and indicates an efficient process. This 960-day timeline, paired with the 80.6 percent allowance rate, offers a clear and predictable path for patent applicants. The 7.1 percent interview lift indicates that the examiner is open to oral advocacy and that such interactions can lead to positive outcomes. With 716 resolved cases, these trends are well-established and reliable. Practitioners should use the lift to resolve any potential issues that may arise. The 960-day median pendency remains a solid benchmark for managing client expectations. Overall, the data indicates that this examiner is both productive and receptive to patent applications.

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

Performance Statistics

80.6%
Allow Rate
+18.6% vs TC avg
730
Total Applications
+7.1%
Interview Lift
960
Avg Prosecution Days
Based on 716 resolved cases, 2023–2026

Rejection Statute Breakdown

2.8%
§101 Eligibility
26.9%
§102 Novelty
40.7%
§103 Obviousness
22.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18778950 IMAGE READING APPARATUS AND IMAGE FORMING SYSTEM Non-Final OA CANON KABUSHIKI KAISHA
18413498 TECHNIQUE FOR EXECUTING CALIBRATION IN IMAGE FORMING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18754211 IMAGE PROCESSING DEVICE, TERMINAL DEVICE, AND RESPONSE METHOD Non-Final OA SHARP KABUSHIKI KAISHA
18791656 TRANSPORT APPARATUS THAT CORRECTS SKEW OF SHEET, AND IMAGE FORMING APPARATUS INCLUDING SUCH TRANSPORT APPARATUS Non-Final OA KYOCERA Document Solutions Inc.
18608023 METHODS FOR INTEGRATED RESOURCE MANAGEMENT IN A PRINTING SYSTEM Final Rejection Kyocera Document Solutions Inc.
18780218 MEDIUM CONVEYING APPARATUS FOR DETERMINING WHETHER A CONVEYED MEDIUM IS ID CARD Non-Final OA PFU LIMITED

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