Prosecution Insights
Last updated: October 27, 2026

Melissa A Rioja, USPTO Patent Examiner

Listed by the USPTO as RIOJA, MELISSA A

Tech Center 1700 • Art Units: 1764 1767 1768 1796

This examiner grants 49% of resolved cases

Analysis

RIOJA, MELISSA A is a USPTO patent examiner in tech center 1700 and art unit 1764. The profile includes 876 resolved cases, an allowance rate of 49.3%, and a median of 1159 days to allowance. The resolved-case volume provides a substantial basis for assessing prosecution outcomes. The allowance rate reflects a nearly even outcome pattern, while the median interval indicates that reaching allowance can require an extended prosecution process.

The interview lift is 54.1%, showing a strong association between interviews and allowance outcomes in this record. Huntsman International LLC, Evonik Operations GmbH, and Dow Global Technologies LLC are the listed leading companies. Grüneberg Global IP, PLLC, Law Office of Michael A. Sanzo, LLC, and OBLON, MCCLELLAND, MAIER & NEUSTADT, L.L.P. are the listed leading firms. Practitioners may want to make interviews central to prosecution planning and coordinate them with claim amendments, while allowing for the 1159-day median.

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

Performance Statistics

49.3%
Allow Rate
-15.7% vs TC avg
951
Total Applications
+54.1%
Interview Lift
1159
Avg Prosecution Days
Based on 876 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
13.3%
§102 Novelty
42.4%
§103 Obviousness
32.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18510438 METHOD FOR PRODUCING RESIN FOAM PRODUCT, RESIN FOAM PRODUCT, AND SHOE INCLUDING RESIN FOAM PRODUCT Final Rejection ASICS CORPORATION
18582298 METHODS OF PRODUCING EMBOSSED CROSSLINKED POLYOLEFIN FOAMS Non-Final OA Toray Plastics (America), Inc.
17905007 Non-primary hydroxyl group based foams Final Rejection BASF SE
18689098 FOAMED POLYLACTIC ACID SHEET, AND METHOD FOR PRODUCING FOAMED POLYLACTIC ACID SHEET Non-Final OA RICOH COMPANY, LTD.
18264529 POLYESTER POLYOL, URETHANE PREPOLYMER AND POLYURETHANE Final Rejection KURARAY CO., LTD.
18731413 FOAMABLE THERMOPLASTIC COMPOSITIONS, THERMOPLASTIC FOAMS AND METHODS OF MAKING SAME Non-Final OA HONEYWELL INTERNATIONAL INC.
18641381 FOAM STABILIZERS FOR PHENOLIC FOAM Non-Final OA Evonik Operations GmbH
18575863 PRODUCTION OF RIGID POLYURETHANE OR POLYISOCYANURATE FOAM Non-Final OA Evonik Operations GmbH
18265430 PRODUCTION OF POLYURETHANE FOAM Non-Final OA EVONIK OPERATIONS GMBH
18029248 FOAM SHEET Non-Final OA SEKISUI CHEMICAL CO., LTD.
17279321 POLYOLEFIN RESIN FOAM SHEET Final Rejection SEKISUI CHEMICAL CO., LTD.
18718131 POROUS PARTICLE, COSMETIC COMPOSITION, AND PRODUCTION METHOD FOR POROUS PARTICLE Non-Final OA DAICEL CORPORATION
18689114 THERMALLY EXPANDABLE RUBBER COMPOSITION Non-Final OA SIKA TECHNOLOGY AG
18284596 COMPOSITE MATERIAL AND METHOD FOR MANUFACTURING COMPOSITE MATERIAL Final Rejection NITTO DENKO CORPORATION
18766986 PROCESS FOR PREPARING A POLYETHER POLYOL WITH A HIGH ETHYLENE OXIDE CONTENT Non-Final OA SHELL USA, INC.
18578336 MELT-PROCESSABLE, BIODEGRADABLE CELLULOSE ACETATES, COMPOSITIONS, MELTS AND MELT-FORMED ARTICLES MADE THEREFROM Non-Final OA Eastman Chemical Company
18039795 ISOCYANATE-REACTIVE COMPONENT, COMPOSITION COMPRISING SAME, AND FOAM FORMED THEREWITH Non-Final OA DOW GLOBAL TECHNOLOGIES LLC
17907910 PROCESS FOR REDUCING ALDEHYDE EMISSIONS IN POLYETHER POLYOLS AND POLYURETHANE FOAMS Final Rejection Dow Global Technologies LLC
18043098 MATERIALS, METHODS, DEVICES AND SYSTEMS FOR INSULATING CAVITIES OF BUILDINGS WITH FOAM INSULATION Final Rejection CertainTeed LLC
18392071 MOLDED ARTICLE OF POLYPROPYLENE-BASED RESIN EXPANDED BEADS AND METHOD FOR PRODUCING SAME Non-Final OA JSP CORPORATION
18032235 ELASTOMERIC POLYURETHANE-POLYUREA COMPRISING WATER BLOWN FOAM HAVING IMPROVED MECHANICAL PROPERTIES Non-Final OA Huntsman International LLC
17928558 USE OF EPOXY COMPOUNDS AS CARBON DIOXIDE SCAVENGERS IN PIR COMPRISING FOAMS FOR SUPERIOR THERMAL INSULATION PROPERTIES Non-Final OA Huntsman International LLC
17915046 Acid-Blocked Alkylaminopyridine Catalysts For Polyurethane Foam Final Rejection Huntsman Petrochemical LLC
18282564 PHOTOCURABLE COMPOSITION, PHOTOCURABLE FOAM COMPOSITION, URETHANE (METH)ACRYLATE COMPOUND, AND METHOD FOR PRODUCING FOAM Final Rejection Sunstar Engineering Inc.
18278402 POLISHING PAD AND METHOD FOR MANUFACTURING POLISHING PAD Final Rejection FUJIBO HOLDINGS, INC.

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Frequently Asked Questions

What is examiner Melissa A Rioja's allowance rate?

49.3% of resolved applications examined by Melissa A Rioja were allowed (876 resolved cases), compared with 54.5% across Art Unit 1764 over the last five years.

Does an interview help with examiner Melissa A Rioja?

This examiner's interview lift is +54.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Melissa A Rioja take to allow a patent?

Applications allowed by Melissa A Rioja took 1,159 days on average from filing to allowance.

Which art unit does examiner Melissa A Rioja work in?

Melissa A Rioja examines applications in Art Unit 1764 in Tech Center 1700 (Chemistry & Materials).

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