Prosecution Insights
Last updated: October 26, 2026

Matthew R Diaz, USPTO Patent Examiner

Listed by the USPTO as DIAZ, MATTHEW R

Tech Center 1700 • Art Units: 1718 1742 1761 1771

This examiner grants 54% of resolved cases

Analysis

DIAZ, MATTHEW R has resolved 545 cases in Tech Center 1700 and Art Unit 1718. The allowance rate is 54.1%, and the median time to allowance is 1030 days. The interview lift is 42.9%, indicating a strong recorded association between interviews and allowance in this prosecution history.

The company portfolio includes Daikin Industries Ltd., Honeywell International Inc., and The Chemours Company FC LLC. The listed firms are WENDEROTH, LIND & PONACK, L.L.P., BIRCH STEWART KOLASCH & BIRCH, LLP, and Grüneberg Global IP, PLLC. The combination of a moderate allowance rate and substantial interview lift suggests that interview preparation may be especially consequential for matters in this docket.

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

Performance Statistics

54.1%
Allow Rate
-10.9% vs TC avg
599
Total Applications
+42.9%
Interview Lift
1030
Avg Prosecution Days
Based on 545 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
14.3%
§102 Novelty
45.0%
§103 Obviousness
29.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18516635 NOVEL COOLANTS WITH IMPROVED STORAGE STABILITY Final Rejection BASF SE
18551803 COOLANTS WITH IMPROVED TEMPERATURE STABILITY Non-Final OA BASF SE
18091670 USE OF COMPOSITION AS REFRIGERANT IN COMPRESSOR, COMPRESSOR, AND REFRIGERATION CYCLE APPARATUS Non-Final OA DAIKIN INDUSTRIES, LTD.
18091038 USE OF COMPOSITION AS REFRIGERANT IN COMPRESSOR, COMPRESSOR, AND REFRIGERATION CYCLE APPARATUS Non-Final OA DAIKIN INDUSTRIES, LTD.
17892759 AIR CONDITIONER Final Rejection DAIKIN INDUSTRIES, LTD.
17551822 REFRIGERANT-CONTAINING COMPOSITION, USE THEREOF, REFRIGERATOR USING SAME, AND OPERATION METHOD FOR SAID REFRIGERATOR Non-Final OA DAIKIN INDUSTRIES, LTD.
17551757 COMPOSITION CONTAINING REFRIGERANT, USE OF SAME, REFRIGERATOR COMPRISING THE SAME, AND METHOD FOR OPERATING SAID REFRIGERATOR Non-Final OA DAIKIN INDUSTRIES, LTD.
17471891 COMPOSITION CONTAINING 1,1,2-TRIFLUOROETHANE Final Rejection DAIKIN INDUSTRIES, LTD.
17394907 COMPOSITION CONTAINING TRANS-1,2-DIFLUOROETHYLENE (HFO-1132(E)) AND 1,1,1-TRIFLUOROETHANE (HFC-143A) AND METHOD FOR SEPARATING HFO-1132(E) AND HFC-143A FROM COMPOSITION CONTAINING HFO-1132(E) AND HFC-143A Non-Final OA DAIKIN INDUSTRIES, LTD.
16597671 REFRIGERATION APPARATUS Non-Final OA DAIKIN INDUSTRIES, LTD.
18658355 AZEOTROPE AND AZEOTROPE-LIKE COMPOSITIONS OF 1-CHLORO-1,2-DIFLUOROETHANE (HCFC-142A) AND 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE (CFC-113) AND APPLICATIONS THEREOF Non-Final OA Honeywell International Inc.
18540930 REFRIGERANTS HAVING LOW GWP, AND SYSTEMS FOR AND METHODS OF PROVIDING REFRIGERATION Non-Final OA HONEYWELL INTERNATIONAL INC.
18540931 REFRIGERANTS HAVING LOW GWP, AND SYSTEMS FOR AND METHODS OF PROVIDING REFRIGERATION Non-Final OA HONEYWELL INTERNATIONAL INC.
18241651 STABILIZED HEAT TRANSFER COMPOSITIONS, METHODS AND SYSTEMS Non-Final OA HONEYWELL INTERNATIONAL INC.
18095446 STABILIZED HEAT TRANSFER COMPOSITIONS, METHODS AND SYSTEMS Final Rejection HONEYWELL INTERNATIONAL INC.
18240607 ORGANIC HEAT TRANSFER SYSTEM, METHOD AND FLUID Final Rejection The Lubrizol Corporation

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Frequently Asked Questions

What is examiner Matthew R Diaz's allowance rate?

54.1% of resolved applications examined by Matthew R Diaz were allowed (545 resolved cases), compared with 35.5% across Art Unit 1718 over the last five years.

Does an interview help with examiner Matthew R Diaz?

This examiner's interview lift is +42.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Matthew R Diaz take to allow a patent?

Applications allowed by Matthew R Diaz took 1,030 days on average from filing to allowance.

Which art unit does examiner Matthew R Diaz work in?

Matthew R Diaz examines applications in Art Unit 1718 in Tech Center 1700 (Chemistry & Materials).

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