Prosecution Insights
Last updated: October 26, 2026

Patrick T Lewis, USPTO Patent Examiner

Listed by the USPTO as LEWIS, PATRICK T

Tech Center 1600 • Art Units: 1621 1623 1657 1672 1673 1691 1693

This examiner grants 74% of resolved cases

Analysis

LEWIS, PATRICK T works in Tech Center 1600 and Art Unit 1621. His record includes 1168 resolved cases, a 74.0% allowance rate, and a median of 846 days to allowance. The interview lift is 14.5%, showing a positive association while leaving the written prosecution record as an important part of case strategy.

The principal companies are Gilead Sciences Inc., CJ CheilJedang Corporation, and The Regents of the University of Michigan. The leading firms are BakerHostetler, Barclay Damon, LLP, and COOLEY LLP. The combination of case volume, allowance rate, and median timing supports proactive prosecution planning, with interviews used to resolve targeted issues efficiently.

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

Performance Statistics

74.0%
Allow Rate
+14.0% vs TC avg
1,201
Total Applications
+14.5%
Interview Lift
846
Avg Prosecution Days
Based on 1168 resolved cases, 2023–2026

Rejection Statute Breakdown

6.2%
§101 Eligibility
19.7%
§102 Novelty
31.5%
§103 Obviousness
22.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18294477 5'UTR VARIANT SEQUENCE OF GENE ENCODING PHOSPHOENOLPYRUVATE CARBOXYLASE, AND USES THEREOF Non-Final OA CJ CHEILJEDANG CORPORATION
18609391 PYRROLOPYRIMIDINE NUCLEOSIDES AND ANALOGS THEREOF Non-Final OA The Regents of the University of Michigan
18570021 SEPARATION OF HUMAN MILK OLIGOSACCHARIDES FROM A FERMENTATION BROTH Final Rejection DSM IP ASSETS B.V.
18693727 METHODS OF TREATING MYELODYSPLASTIC SYNDROMES WITH DECITABINE AND CEDAZURIDINE Non-Final OA OTSUKA PHARMACEUTICAL CO., LTD.
18715601 PRODUCTION OF HIGHLY FUNCTIONALIZED POLYSACCHARIDES WITH IMPROVED BIODEGRADABILITY Non-Final OA SPECIALTY OPERATIONS FRANCE
18717827 COMPOSITION CONTAINING A MACROLIDE INSECTICIDAL COMPOUND AND POLYCATIONIC RHEOLOGY MODIFIER Non-Final OA ADAMA MAKHTESHIM LTD.

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Frequently Asked Questions

What is examiner Patrick T Lewis's allowance rate?

74.0% of resolved applications examined by Patrick T Lewis were allowed (1,168 resolved cases), compared with 46.0% across Art Unit 1621 over the last five years.

Does an interview help with examiner Patrick T Lewis?

This examiner's interview lift is +14.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Patrick T Lewis take to allow a patent?

Applications allowed by Patrick T Lewis took 846 days on average from filing to allowance.

Which art unit does examiner Patrick T Lewis work in?

Patrick T Lewis examines applications in Art Unit 1621 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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