Prosecution Insights
Last updated: October 26, 2026

Guinever S Gregorio, USPTO Patent Examiner

Listed by the USPTO as GREGORIO, GUINEVER S

Tech Center 1700 • Art Units: 1732 1793

This examiner grants 73% of resolved cases

Analysis

Guinever S. Gregorio has resolved 843 cases in Art Unit 1732. The examiner maintains an allowance rate of 73.1 percent. The median time to allowance is 1166 days, which is standard for chemical and material science technologies in Tech Center 1700. These figures suggest a relatively predictable and successful prosecution environment for most applicants.

Interviews are a useful tool, providing an interview lift of 18.4 percent. This indicates that direct communication can help resolve issues and move applications toward a grant. The examiner's docket includes a mix of corporate and academic applicants, such as Archer Daniels Midland Company, Massachusetts Institute of Technology, and JFE Steel Corporation. Firms like GREENBLUM & BERNSTEIN, P.L.C., STINSON LLP, and Chrisman Gallo Tochtrop LLC are frequently active before this examiner. These firms can use the 18.4 percent lift to navigate the 1166-day median pendency more effectively.

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

Performance Statistics

73.1%
Allow Rate
+8.1% vs TC avg
876
Total Applications
+18.4%
Interview Lift
1166
Avg Prosecution Days
Based on 843 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
9.1%
§102 Novelty
58.4%
§103 Obviousness
20.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17729121 HEXAGONAL BORON NITRIDE STRUCTURES Non-Final OA TEXAS INSTRUMENTS INCORPORATED
18258329 PLASMA TREATMENT METHOD, METHOD OF PRODUCING PLASMA-TREATED HEXAGONAL BORON NITRIDE POWDER, AND PLASMA TREATMENT DEVICE Non-Final OA JFE STEEL CORPORATION
18443862 LITHIUM RECLAMATION FROM GLASS-BASED MATERIALS BY WATER-DRIVEN EXTRACTION Non-Final OA CORNING INCORPORATED
18371684 COATING AGENT AND OIL-RESISTANT PAPER Final Rejection Mitsubishi Chemical Corporation
18498480 APPARATUS AND PROCESS FOR STEAM REFORMING Non-Final OA Air Products and Chemicals, Inc.
16938012 POROUS SHAPED METAL-CARBON PRODUCTS Final Rejection Archer-Daniels-Midland Company
17808919 METHOD FOR PRODUCING A METAL-CERAMIC SUBSTRATE AND FURNACE Non-Final OA Heraeus Electronics GmbH & Co. KG
17642798 PHOSPHORUS ADSORBENT Non-Final OA THE CHUGOKU ELECTRIC POWER CO., INC.

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Frequently Asked Questions

What is examiner Guinever S Gregorio's allowance rate?

73.1% of resolved applications examined by Guinever S Gregorio were allowed (843 resolved cases), compared with 53.6% across Art Unit 1732 over the last five years.

Does an interview help with examiner Guinever S Gregorio?

This examiner's interview lift is +18.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Guinever S Gregorio take to allow a patent?

Applications allowed by Guinever S Gregorio took 1,166 days on average from filing to allowance.

Which art unit does examiner Guinever S Gregorio work in?

Guinever S Gregorio examines applications in Art Unit 1732 in Tech Center 1700 (Chemistry & Materials).

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