Prosecution Insights
Last updated: October 02, 2026

Examiner: VASSELL, MEREDITH ABBOTT

Tech Center 3700 • Art Units: 1624 1671 1687 3796

This examiner grants 30% of resolved cases

Analysis

Meredith Abbott Vassell is an examiner in Art Unit 1624 within Tech Center 3700. The examiner has a total of 66 resolved cases. The allowance rate for these cases is 30.3%. This 30.3% rate indicates a more rigorous examination environment compared to other examiners. Practitioners should be aware that the 30.3% allowance rate suggests a lower probability of success for applications in this art unit.

The median days to allowance is 1726, which represents a long prosecution timeline for successful applications. This 1726-day period should be communicated to clients to manage expectations regarding pendency. However, the data shows a very high interview lift of 47.0%. This 47.0% lift is a critical finding, as it suggests that interviews are exceptionally effective at improving the chances of allowance despite the low base rate. Practitioners should almost always request an interview, as the 47.0% lift provides a significant opportunity to overcome rejections. The 66 resolved cases and 1726-day median pendency highlight the challenging nature of prosecution with this examiner.

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

Performance Statistics

30.3%
Allow Rate
-39.7% vs TC avg
93
Total Applications
+47.0%
Interview Lift
1726
Avg Prosecution Days
Based on 66 resolved cases, 2023–2026

Rejection Statute Breakdown

31.6%
§101 Eligibility
3.6%
§102 Novelty
31.8%
§103 Obviousness
25.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17652946 INSPECTION VALUE PREDICTION DEVICE, INSPECTION VALUE PREDICTION SYSTEM, AND INSPECTION VALUE PREDICTION METHOD Final Rejection Toshiba Digital Solutions Corporation
18330737 SYSTEMS AND METHODS FOR IDENTIFYING SEQUENCE VARIATION Non-Final OA LIFE TECHNOLOGIES CORPORATION
15734269 REDUCING INHALATION OF POLLUTANTS WHEN TRAVELLING Final Rejection KONINKLIJKE PHILIPS N.V.
18029612 BIOLOGICAL PARTICLE SORTING DEVICE, BIOLOGICAL PARTICLE SORTING SYSTEM, AND INFORMATION PROCESSING DEVICE Non-Final OA Sony Group Corporation
18330283 CARDIAC SHUNT DEVICE TO MINIMIZE DISRUPTION AND ENHANCE NATURAL FLOW PATTERNS OF BLOOD THROUGH THE HEART Non-Final OA EDWARDS LIFESCIENCES CORPORATION
18146123 MACHINE LEARNING SOLUTION TO PREDICT PROTEIN CHARACTERISTICS Non-Final OA MICROSOFT TECHNOLOGY LICENSING, LLC
18372896 SEMI-EMPIRICAL WATER MODEL FOR SIMULATING CHEMICAL REACTIONS IN WATER Non-Final OA International Business Machines Corporation
17669258 METHOD FOR CORRECTING DATA RELATED TO ELECTROPHORESIS, METHOD FOR DETERMINING WHETHER PEAK IS SAMPLE-DERIVED PEAK OR SPIKE, APPARATUS, AND PROGRAM Non-Final OA HITACHI, LTD.
17636272 SINGLE-CELL MODELING OF CLINICAL DATA TO DETERMINE RED BLOOD CELL REGULATION Final Rejection The General Hospital Corporation
17889778 FLUORESCENCE IMAGE ANALYSIS METHOD, FLUORESCENCE IMAGE ANALYZER, FLUORESCENCE IMAGE ANALYSIS PROGRAM Non-Final OA SYSMEX CORPORATION
17766008 PROCESS AND DEVICE FOR DETERMINING A RESPIRATORY AND/OR CARDIOGENIC SIGNAL Final Rejection Drägerwerk AG & Co. KGaA
16579805 MIXTURE MODEL FOR TARGETED SEQUENCING Final Rejection Grail, Inc.
18169834 TUMOR FRACTION ESTIMATION USING METHYLATION VARIANTS Non-Final OA Grail, LLC

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