Prosecution Insights
Last updated: October 02, 2026

Examiner: SINGER, DAVID L

Tech Center 2800 • Art Units: 2855 2856

This examiner grants 69% of resolved cases

Analysis

David L Singer is an examiner in Tech Center 2800 and Art Unit 2855. He has 440 resolved cases with an allowance rate of 69.1 percent. This 69.1 percent rate suggests a generally positive outlook for applicants in his docket. The median days to allowance is 1034, which is a typical duration for cases in this technology center. Practitioners should use this 1034-day figure to manage client expectations regarding the length of the prosecution cycle in this art unit.

The interview lift is 42.2 percent. This 42.2 percent lift is high, suggesting that interviews are extremely effective at resolving issues and moving cases toward allowance. For practitioners, this lift is a strong signal that direct communication can significantly improve the 69.1 percent allowance rate. The 440 resolved cases provide a reliable data set for making strategic decisions in Art Unit 2855. Direct interaction in Tech Center 2800 appears to be a primary driver for successful outcomes, helping to navigate the examination process effectively.

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

Performance Statistics

69.1%
Allow Rate
+1.1% vs TC avg
458
Total Applications
+42.2%
Interview Lift
1034
Avg Prosecution Days
Based on 440 resolved cases, 2023–2026

Rejection Statute Breakdown

4.5%
§101 Eligibility
12.8%
§102 Novelty
53.3%
§103 Obviousness
25.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18678918 ACOUSTIC INSPECTION DEVICE AND METHODS OF OPERATION Non-Final OA General Electric Company
18746342 Analysis Apparatus Column Oven Non-Final OA Hitachi High-Tech Corporation
18286284 SAMPLE CONTAINER AND AUTOMATIC ANALYZER Non-Final OA Hitachi High-Tech Corporation
18371405 ANALYSIS OF MOBILE PHASE SUPPLY FROM MOBILE PHASE CONTAINER Final Rejection Agilent Technologies, Inc.
18371392 ANALYSIS OF MOBILE PHASE SUPPLY FROM MOBILE PHASE CONTAINER Final Rejection Agilent Technologies, Inc.
18673069 SYSTEM AND METHOD FOR MEASURING A GAS CONCENTRATION IN ONE OR MORE REACTION CHAMBERS Non-Final OA VIAVI SOLUTIONS INC.
18839674 PRESSURE SENSOR ARRANGEMENT AND METHOD OF MANUFACTURING A PRESSURE SENSOR ARRANGEMENT Non-Final OA TDK Electronics AG
18678124 VARYING THE COUPLANT OR RATIO OF MIXTURES INSIDE OR OUTSIDE OF AN ENCLOSED OR OPEN NON-DESTRUCTIVE TESTING DEVICE Final Rejection University of South Florida
18522331 LIFT OFF SPEED DETECTION Non-Final OA Garrett Transportation I Inc.
18656826 HOUSING ASSEMBLY AND METHOD FOR FORMING THE HOUSING ASSEMBLY Final Rejection Rosemount Tank Radar AB

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