Prosecution Insights
Last updated: October 02, 2026

Examiner: BASS, DIRK R

Tech Center 1700 • Art Units: 1677 1777 1779 1797

This examiner grants 62% of resolved cases

Analysis

Dirk R. Bass is an examiner in Tech Center 1700, working within Art Unit 1677. He has managed 852 resolved cases, which show an allowance rate of 62.3 percent. This rate suggests a fair chance of success for patent applicants. The median time to allowance is 1379 days, indicating that the prosecution process can be lengthy before a patent is issued.

The interview lift for Bass is 22.9 percent. This is a significant increase over the 62.3 percent baseline, making interviews a recommended strategy for practitioners. Given the 1379 days median pendency, an interview could be a vital tool for resolving issues more quickly and improving the likelihood of a grant. The 852 resolved cases provide a robust data set, confirming that the 22.9 percent lift is a consistent trend in Art Unit 1677. Applicants should prepare for a long process but can use interviews to boost their 62.3 percent odds of success.

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

Performance Statistics

62.4%
Allow Rate
-2.6% vs TC avg
877
Total Applications
+22.8%
Interview Lift
1378
Avg Prosecution Days
Based on 854 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
26.4%
§102 Novelty
52.2%
§103 Obviousness
15.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18702782 METHOD FOR TREATING HIGH-CONCENTRATION FERMENTATION BY-PRODUCTS GENERATED IN AMINO ACID FERMENTATION PROCESS Non-Final OA CJ CHEILJEDANG CORPORATION
18721532 FILTER ELEMENT Non-Final OA Robert Bosch GmbH
19396752 NANOPARTICLE-ENTRAINED MULTIFUNCTIONAL NANOSTRUCTURE-COATED MOBILE CARRIERS, AND SYSTEMS AND METHODS OF UTILIZING SAME TO TREAT CONTAMINATED WATER Non-Final OA Woodard & Curran, Inc.
19394162 NANOPARTICLE-ENTRAINED MULTIFUNCTIONAL NANOSTRUCTURE-COATED MOBILE CARRIERS, AND SYSTEMS AND METHODS OF UTILIZING SAME TO TREAT CONTAMINATED WATER Non-Final OA Woodard & Curran, Inc.
19390832 NANOPARTICLE-ENTRAINED MULTIFUNCTIONAL NANOSTRUCTURE-COATED MOBILE CARRIERS, AND SYSTEMS AND METHODS OF UTILIZING SAME TO TREAT CONTAMINATED WATER Non-Final OA Woodard & Curran, Inc.
18772818 Drain Apparatus for Hemodialysis Machines Non-Final OA Fresenius Medical Care Holdings, Inc.
18625360 MULTI-STAGE MEMBRANE FILTRATION SYSTEM AND METHOD FOR OPERATING A MULTI-STAGE MEMBRANE FILTRATION SYSTEM Non-Final OA B. Braun Avitum AG
18709940 AIR-PERMEABLE FILTER AND AIR-PERMEABLE MEMBER Non-Final OA NITTO DENKO CORPORATION
18287577 SELECTIVELY PERMEABLE MEMBRANE OBTAINED BY CARBONIZATION SULFONATED POLY(PHENYLENE ETHER) COPOLYMER Final Rejection SHPP Global Technologies B.V.
18215463 MATERIALS AND METHODS FOR WATER PURIFICATION Final Rejection UNIVERSITY OF NOTRE DAME DU LAC

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