Prosecution Insights
Last updated: October 02, 2026

Examiner: CHEN, HUO LONG

Tech Center 2600 • Art Units: 2625 2674 2676 2681 2682

This examiner grants 54% of resolved cases

Analysis

Huo Long Chen is an examiner in Tech Center 2600 and Art Unit 2625 with 609 resolved cases. The allowance rate is 53.7%, which is a balanced outcome for applicants. The median days to allowance is 1220, reflecting a standard timeline for successful prosecution. This 1220-day duration is a key metric for planning in Art Unit 2625. The 53.7% rate indicates that a majority of cases are eventually granted.

The interview lift is 30.3%. This indicates that interviews are effective at improving the 53.7% allowance rate. In Tech Center 2600, the 1220-day median pendency is a standard expectation for practitioners. The 609 resolved cases provide a reliable statistical profile for this examiner. The 30.3% lift suggests that verbal advocacy is a productive way to resolve outstanding issues.

Practitioners should use the 30.3% interview lift to boost their chances beyond the 53.7% baseline. The 1220-day median to allowance is the expected duration for grants. The 609 cases suggest that engagement is a productive strategy for success in Art Unit 2625. Applicants should factor the 30.3% lift into their overall prosecution strategy.

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

Performance Statistics

53.7%
Allow Rate
-8.3% vs TC avg
638
Total Applications
+30.3%
Interview Lift
1220
Avg Prosecution Days
Based on 609 resolved cases, 2023–2026

Rejection Statute Breakdown

9.1%
§101 Eligibility
11.7%
§102 Novelty
68.7%
§103 Obviousness
7.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19025105 IMAGE READING APPARATUS Non-Final OA SEIKO EPSON CORPORATION
18587473 IMAGE PROCESSING CONTROL SYSTEM, CONTROL APPARATUS, AND IMAGE PROCESSING APPARATUS Final Rejection SEIKO EPSON CORPORATION
18729113 IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM Non-Final OA NEC Corporation
18318727 INFORMATION PROCESSING APPARATUS AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAM Final Rejection FUJIFILM Business Innovation Corp.
17873759 INFORMATION PROCESSING APPARATUS AND METHOD AND NON-TRANSITORY COMPUTER READABLE MEDIUM Final Rejection FUJIFILM Business Innovation Corp.
18944488 PRINTING SYSTEM, PRINTING CONTROL APPARATUS, PRINTING CONTROL METHOD, AND RECORDING MEDIUM Non-Final OA RICOH COMPANY, LTD.
18217080 AUTOMATIC COUNTING AT CHECKOUT USING MIX OF BARCODE DECODING AND MACHINE VISION Non-Final OA ZEBRA TECHNOLOGIES CORPORATION
18901303 PRINT SYSTEM AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM THEREFOR Non-Final OA BROTHER KOGYO KABUSHIKI KAISHA
18302493 TEXT RECOGNIZER USING CONTOUR SEGMENTATION Non-Final OA The Boeing Company
19049874 CONTROL METHOD AND INFORMATION PROCESSING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
19015971 DIAGNOSTIC APPARATUS, CONTROL METHOD FOR THE SAME, STORAGE MEDIUM, AND IMAGE FORMING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18894488 INFORMATION PROCESSING APPARATUS, METHOD OF CONTROLLING INFORMATION PROCESSING APPARATUS, AND STORAGE MEDIUM Non-Final OA CANON KABUSHIKI KAISHA
18887226 INFORMATION PROCESSING APPARATUS, PRINTING SYSTEM, STORAGE MEDIUM, AND METHOD OF CONTROLLING INFORMATION PROCESSING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18887658 IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18648937 INFORMATION PROCESSING APPARATUS, METHOD OF INSTALLING CLOUD PRINTER DRIVER, AND MEDIUM Non-Final OA CANON KABUSHIKI KAISHA
18787163 SECURING PRINTED FEATURES USING VOLATILE DETERMINANTS Non-Final OA Capital One Services, LLC
18217497 SUBTITLE POSITIONING BASED ON SALIENCY DETECTION Final Rejection Intel Corporation
18672759 IMAGE FORMING SYSTEM, IMAGE FORMING METHOD AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM ENCODED WITH IMAGE FORMING PROGRAM Non-Final OA Konica Minolta, Inc.
19010854 IMAGE READING DEVICE AND IMAGE FORMING APPARATUS THEREWITH Non-Final OA KYOCERA Document Solutions Inc.
18947966 METHODS AND PRINTING SYSTEM USING RASTER IMAGE PROCESSORS CONFIGURED FOR PROCESSING A JOB Non-Final OA Kyocera Document Solutions Inc.
17740353 APPARATUS, METHOD, AND COMPUTER READABLE MEDIUM Final Rejection Yokogawa Electric Corporation
18960394 ITEM IMAGE LIBRARY MAINTENANCE BASED ON LOW-QUALITY IMAGES Non-Final OA Home Depot Product Authority, LLC

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