Prosecution Insights
Last updated: October 02, 2026

Examiner: KOO, BENJAMIN K

Tech Center 3700 • Art Units: 3763 3783

This examiner grants 57% of resolved cases

Analysis

Benjamin K. Koo is an examiner in Tech Center 3700 and Art Unit 3763. He has resolved 212 cases, providing a picture of his examination tendencies. His allowance rate is 57.1 percent, suggesting a moderate level of difficulty for applicants.

The interview lift for this examiner is 49.7 percent, which is a high increase. This suggests that interviews are effective in Art Unit 3763 for resolving outstanding issues and securing an allowance. Given the 57.1 percent baseline, the 49.7 percent lift is an incentive for practitioners to schedule an interview early in the process.

The median days to allowance is 1208, representing the typical pendency for cases that reach issuance. This 1208-day timeline is a standard expectation for applicants in Tech Center 3700. With 212 resolved cases, the 57.1 percent allowance rate and the 49.7 percent lift are the relevant figures for developing a prosecution strategy.

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

Performance Statistics

57.1%
Allow Rate
-12.9% vs TC avg
258
Total Applications
+49.7%
Interview Lift
1208
Avg Prosecution Days
Based on 212 resolved cases, 2023–2026

Rejection Statute Breakdown

2.3%
§101 Eligibility
14.4%
§102 Novelty
49.4%
§103 Obviousness
30.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18109103 Catheter Insertion System Final Rejection Bard Access Systems, Inc.
17771948 MULTI-SHOT INJECTION PATCH Non-Final OA DAICEL CORPORATION
17928720 CATHETER Non-Final OA KANEKA CORPORATION
18721814 HYDRAULICALLY ACTUATED CATHETER LIKE SYSTEM FOR TREATING VASCULAR AND NON-VASCULAR DISEASES Non-Final OA BIOTRONIK AG
17804256 REGULATION OF INSULIN ON BOARD Final Rejection Medtronic MiniMed, Inc.
17671278 FLUID TITRATION SYSTEM Non-Final OA MASIMO CORPORATION
18238967 INTEGRATED CATHETER SYSTEM CONFIGURED FOR BLOOD SAMPLING Non-Final OA Becton, Dickinson and Company
18027641 Brake Tower with Elastomeric Component and Medical Injection Device Including the Same Final Rejection Becton, Dickinson and Company
18113347 Catheter Adapter with Stabilization Feature Final Rejection Becton, Dickinson and Company
17961979 Plastic Stopper Non-Final OA Becton, Dickinson and Company
17808391 SUBCUTANEOUS INSERTION MECHANISM WITH AUTOMATIC RETRACTION VIA PRE-ENERGIZED RELEASE AND LATCHING MEMBER Non-Final OA Becton, Dickinson and Company
17743911 Catheter Assembly Having a Side Port Pathway and Related Methods Non-Final OA Becton, Dickinson and Company
17714820 VASCULAR ACCESS DEVICE HAVING A PHOSPHORESCENT FEATURE Non-Final OA Becton, Dickinson and Company
18038859 Drug Delivery Device Non-Final OA Sanofi
17923633 A DIAL GRIP FOR AN INJECTION DEVICE Non-Final OA Sanofi
17942043 DRUG DELIVERY MONITORING SYSTEM Non-Final OA Analog Devices, Inc.
18737593 Medication Delivery Device Non-Final OA United States Government as represented by the Department of Veterans Affairs
17694800 Catheter Final Rejection TERUMO KABUSHIKI KAISHA
18539009 ADJUSTING INSULIN DELIVERY RATES Non-Final OA Insulet Corporation
17718663 COMPENSATION FOR CALIBRATION OFFSETS IN AGENT DELIVERY DEVICES Final Rejection Insulet Corporation
18863416 A rotator for a medicament delivery device Non-Final OA SHL Medical AG
18214111 EXTENDED WEAR MICRONEEDLE APPARATUS Final Rejection NUTROMICS TECHNOLOGY PTY LTD
17767471 DRUG DELIVERY DEVICE AND SYSTEM Final Rejection AMGEN INC.
17632145 BUCCAL ADMINISTRATION OF AEROSOL Final Rejection STAMFORD DEVICES LIMITED
18174624 ASPIRATION CATHETER INCLUDING A LUBRICIOUS INNER LINER AND FLEXIBLE DISTAL TIP Final Rejection Deepin Technologies, LLC
18051055 METHOD AND APPARATUS FOR RECTAL ANAESTHESIA Final Rejection New Medtek Devices Pty Ltd
17986401 Steerable Guidewire and Method of Use Non-Final OA Indian Wells Medical, Inc.

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