Prosecution Insights
Last updated: October 02, 2026

Examiner: GONZALEZ, MADELINE

Tech Center 1700 • Art Units: 1772 1773 1778 1797

This examiner grants 73% of resolved cases

Analysis

Madeline Gonzalez serves as an examiner in Tech Center 1700 and Art Unit 1772. She has managed 826 resolved cases, maintaining an allowance rate of 72.6 percent. The data includes an interview lift of 15.7 percent, representing the increase in allowance probability associated with examiner interviews. This 15.7 percent lift is a notable gain when compared to the 72.6 percent baseline allowance rate. Practitioners should consider scheduling interviews to clarify technical points and potentially improve the likelihood of a grant.

The median days to allowance for the 826 resolved cases is 1074. This figure establishes the expected timeframe for reaching a successful conclusion in Art Unit 1772. The 72.6 percent allowance rate suggests a favorable environment for applicants seeking patent protection. Practitioners can use the 1074 days to allowance to plan their prosecution budgets and manage client expectations. The 15.7 percent interview lift indicates that direct engagement remains a productive tactic even with a high baseline success rate.

In Tech Center 1700, the resolved cases provide a stable statistical foundation for these observations. The 1074 days to allowance is the median duration for successful outcomes. Understanding the relationship between the allowance rate and the interview lift helps in developing a realistic strategy. These figures offer a data-grounded view of the examination process. Practitioners can rely on these numbers to guide their interactions with the examiner and optimize their prosecution approach.

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

Performance Statistics

72.6%
Allow Rate
+7.6% vs TC avg
854
Total Applications
+15.7%
Interview Lift
1074
Avg Prosecution Days
Based on 826 resolved cases, 2023–2026

Rejection Statute Breakdown

0.5%
§101 Eligibility
21.4%
§102 Novelty
48.8%
§103 Obviousness
21.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18373461 METHOD OF TREATING A CHEMICAL PRODUCT Non-Final OA Illinois Tool Works Inc.
18685692 Multilayer Treatment Tank and Sewage Treatment System Non-Final OA Kubota Corporation
18017743 FILTER ASSEMBLY WITH REULEAUX SEALING INTERFACE Non-Final OA Cummins Filtration Inc.
18365379 FILTER DEVICE Non-Final OA Murata Manufacturing Co., Ltd.
18617267 VALVE ARRANGEMENT, LIQUID FILTERS, FILTER ASSEMBLIES, AND METHOD Non-Final OA Donaldson Company, Inc.
18634213 FLUID SYSTEM HAVING FILTER CONNECTING SYSTEM BETWEEN HOUSING COMPONENTS Non-Final OA Caterpillar Inc.
18718993 WATER TREATMENT SYSTEM AND METHOD INCLUDING A DRAFT TUBE SYSTEM AND EDUCTOR Non-Final OA Siemens Energy, Inc.
18420661 SPACERS FOR FILTRATION APPLICATIONS Non-Final OA ENTEGRIS, INC.
18077813 LIQUID FILTER UNIT WITH VERTICALLY ARRANGED FILTERS, AND METHOD OF OPERATING THEREOF Non-Final OA ENTEGRIS, INC.
17981571 FILTER CARTRIDGE, AND METHOD OF RETROFITTING FILTER HOUSING Final Rejection ENTEGRIS, INC.
18844837 Coolant Supply Device Non-Final OA DMG MORI CO., LTD.
18432435 Liquid Recovery Filter Non-Final OA Saint-Gobain Performance Plastics Corporation

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