Prosecution Insights
Last updated: October 26, 2026

Hamza A. Darb, USPTO Patent Examiner

Listed by the USPTO as DARB, HAMZA A.

Tech Center 3700 • Art Units: 1645 3763 3783

This examiner grants 74% of resolved cases

Analysis

DARB, HAMZA A. is a Tech Center 3700 examiner in Art Unit 1645 with 548 resolved cases. The allowance rate is 74.5%, and the median time to allowance is 1224 days. The record offers a useful foundation for planning claim amendments and setting expectations for the duration of prosecution.

The interview lift is 31.1%, indicating a positive association with interviews. An interview may help the applicant test a focused distinction and reduce unnecessary breadth in the written response.

Becton, Dickinson and Company, Boston Scientific Corporation, and Aita Bio Inc. are the listed companies. Davidson Kappel LLC - AiTA Bio, MOSER TABOADA, and Secant IP, PLLC are the listed firms.

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

Performance Statistics

74.5%
Allow Rate
+4.5% vs TC avg
628
Total Applications
+31.1%
Interview Lift
1224
Avg Prosecution Days
Based on 548 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
17.0%
§102 Novelty
50.6%
§103 Obviousness
25.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18800676 SYSTEMS AND METHODS FOR CONTROLLING NEEDLE PENETRATION Non-Final OA Boston Scientific Scimed, Inc.
18429685 MICROCATHETER MANIFOLD ADAPTER AND ASSOCIATED SYSTEMS AND METHODS Final Rejection BOSTON SCIENTIFIC SCIMED, INC.
18721433 FLUOROSCOPIC IMAGE GUIDED ROBOTIC BLOOD VESSEL CANNULATION Non-Final OA KONINKLIJKE PHILIPS N.V.
18110086 Vascular Access System with Flow Restriction Device Non-Final OA Becton, Dickinson and Company
17968244 Medical Device Hub and System for Securing a First Medical Device Relative to a Second Medical Device Final Rejection Becton, Dickinson and Company
17917222 Steerable Cannulas and Hinged or Steerable Needles Including Access Sets and Methods Thereof Non-Final OA Becton, Dickinson and Company

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Frequently Asked Questions

What is examiner Hamza A. Darb's allowance rate?

74.5% of resolved applications examined by Hamza A. Darb were allowed (548 resolved cases), compared with 49.5% across Art Unit 1645 over the last five years.

Does an interview help with examiner Hamza A. Darb?

This examiner's interview lift is +31.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Hamza A. Darb take to allow a patent?

Applications allowed by Hamza A. Darb took 1,224 days on average from filing to allowance.

Which art unit does examiner Hamza A. Darb work in?

Hamza A. Darb examines applications in Art Unit 1645 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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