Prosecution Insights
Last updated: October 02, 2026

Examiner: BELL, SARA ELIZABETH

Tech Center 1600 • Art Units: 1621 1625

This examiner grants 69% of resolved cases

Analysis

Sara Elizabeth Bell is an examiner in Tech Center 1600, working within Art Unit 1621. The examiner has handled 64 resolved cases, which provides an informative dataset. The allowance rate is 68.8 percent, showing the frequency of granted patents on this docket. This 68.8 percent figure serves as the primary benchmark for applicants evaluating their chances of success. The 64 resolved cases establish the current record for this examiner.

The interview lift is 38.2 percent, which is a significant metric in this profile. This 38.2 percent lift indicates that conducting an interview correlates with a higher probability of allowance compared to cases without one. When viewed alongside the 68.8 percent allowance rate, the data suggests that oral advocacy is a driver of successful prosecution. The median days to allowance is 1356, which is the typical timeframe for applications that reach a grant. This 1356 median days to allowance reflects the pace of prosecution.

The data in Art Unit 1621 shows that the interview lift is 38.2 percent, providing a clear strategy for applicants. The 1356 median days to allowance helps set expectations for the overall timeline in Tech Center 1600. Given the 68.8 percent allowance rate, applicants have a documented chance of success. These statistics provide a basis for strategic planning during the examination process and help in managing client expectations.

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

Performance Statistics

68.8%
Allow Rate
+8.8% vs TC avg
110
Total Applications
+38.2%
Interview Lift
1356
Avg Prosecution Days
Based on 64 resolved cases, 2023–2026

Rejection Statute Breakdown

3.8%
§101 Eligibility
26.2%
§102 Novelty
22.4%
§103 Obviousness
29.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18323240 PYRROLIDINE DERIVATIVES AND METHODS OF USE Final Rejection Genentech, Inc.
17428080 IMMUNOPHILIN-DEPENDENT INHIBITORS AND USES THEREOF Non-Final OA The Regents of the University of California
18286185 TREATMENT METHODS AND COMPOSITIONS COMPRISING PERAMPANEL Final Rejection The Johns Hopkins University
18287632 Quinazoline Derivatives, Pharmaceutical Compositions, and Therapeutic Uses Related to Nox Inhibition Non-Final OA The Medical College of Wisconsin, Inc.
17642285 BIFUNCTIONAL DEGRADERS AND THEIR METHODS OF USE Non-Final OA NOVARTIS AG
18532424 Papain-like protease (PLpro) inhibitors Non-Final OA Pfizer Inc.
18027785 TRIAZINE COMPOUND, MATERIAL FOR ORGANIC LIGHT EMITTING DIODE, ELECTRON TRANSPORT MATERIAL FOR ORGANIC LIGHT EMITTING DIODE, AND ORGANIC LIGHT EMITTING DIODE Final Rejection TOSOH CORPORATION
18192313 MODULATORS OF MAS-RELATED G-PROTEIN RECEPTOR X2 AND RELATED PRODUCTS AND METHODS Non-Final OA INCYTE CORPORATION
18573790 CEREBLON BINDING COMPOUNDS, COMPOSITIONS THEREOF, AND METHODS OF TREATMENT THEREWITH Non-Final OA CELGENE CORPORATION
17598665 PLK1 INHIBITORS AND PSA LEVELS IN PROSTATE CANCER Final Rejection Cardiff Oncology, Inc.

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