Prosecution Insights
Last updated: October 27, 2026

David Nelson Brandt, USPTO Patent Examiner

Listed by the USPTO as BRANDT, DAVID NELSON

Tech Center 4100 • Art Units: 3746 3783 4100

This examiner grants 70% of resolved cases

Analysis

BRANDT, DAVID NELSON works in Tech Center 4100 and art unit 3746, with 382 resolved cases. The allowance rate is 70.4%, and the median time to allowance is 963 days. The interview lift is 49.7%, a strong positive association within this record and a notable consideration for prosecution strategy.

The listed companies are Becton, Dickinson and Company, Halliburton Energy Services Inc., and Daicel Corporation. The listed firms are BIRCH STEWART KOLASCH & BIRCH, LLP, Bond, Schoeneck & King, PLLC - SANOFI, and Calderon Safran & Wright P.C. Practitioners may find interview preparation particularly important when developing responses in this docket.

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

Performance Statistics

70.4%
Allow Rate
+10.4% vs TC avg
428
Total Applications
+49.7%
Interview Lift
963
Avg Prosecution Days
Based on 382 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
19.9%
§102 Novelty
40.4%
§103 Obviousness
36.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18402840 FLUID PUMP HOUSING SECTION HAVING ONE OR MORE JOINING FLANGES COLLECTIVELY EXTENDING ALONG A SUBSTANTIAL PERCENTAGE OF A CIRCUMFERENCE THEREOF Final Rejection Halliburton Energy Services, Inc.
18370060 DETERMINING ANGULAR POSITION OF A ROTOR IN A DOWNHOLE ELECTRIC SUBMERSIBLE PUMP (ESP) ELECTRIC MOTOR Non-Final OA Halliburton Energy Services, Inc.
17074405 Rapidly Insertable Central Catheter and Methods Thereof Non-Final OA Bard Access Systems, Inc.
18289526 TISSUE RESECTION SYSTEMS INCLUDING FLUID OUTFLOW MANAGEMENT Non-Final OA Covidien LP
18039433 ADMINISTRATION DEVICE FOR IN PARTICULAR INTRAVITREAL ADMINISTRATION OF A FLUID Final Rejection BOEHRINGER INGELHEIM INTERNATIONAL GMBH
18472929 CONTINUOUS ADMINISTRATION DEVICE Non-Final OA TERUMO KABUSHIKI KAISHA
18266316 A BREAST PUMP Final Rejection KONINKLIJKE PHILIPS N.V.
18472670 LAMPREY LOCK DEVICE Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18361827 Automatic Suspension and Resumption of Medicament Delivery Final Rejection Dexcom, Inc.
18670146 Torosional Non-Disconnecting Luer Connector Non-Final OA Becton, Dickinson and Company
18684130 Smart Monitoring of an Intravenous Access Site Using Sensors for Continuous Monitoring Non-Final OA Becton, Dickinson And Company
18023434 ROTATIONAL METERING PUMP WITH CAM-DRIVEN VALVING SHUTTLE INTERLOCK Final Rejection Becton, Dickinson and Company
18434440 REUSABLE INJECTION APPARATUS AND METHOD Non-Final OA Purdue Research Foundation
18270771 INJECTOR Non-Final OA DAICEL CORPORATION
18288449 Housing Components for an Injection Device Non-Final OA Sanofi
18281377 Access System Including Flexible Needle Non-Final OA Bard Peripheral Vascular, Inc.
18368242 FRICTIONLESS DESIGN OF HIGH-PRESSURE RECIRCULATION THERMO-PUMP Non-Final OA KLA Corporation

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Frequently Asked Questions

What is examiner David Nelson Brandt's allowance rate?

70.4% of resolved applications examined by David Nelson Brandt were allowed (382 resolved cases), compared with 68.0% across Art Unit 3746 over the last five years.

Does an interview help with examiner David Nelson Brandt?

This examiner's interview lift is +49.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner David Nelson Brandt take to allow a patent?

Applications allowed by David Nelson Brandt took 963 days on average from filing to allowance.

Which art unit does examiner David Nelson Brandt work in?

David Nelson Brandt examines applications in Art Unit 3746 in Tech Center 4100.

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