Prosecution Insights
Last updated: October 02, 2026

Examiner: RIGA, MICHAEL ANGELO

Tech Center 1600 • Art Units: 1633 1634 1653

This examiner grants 57% of resolved cases

Analysis

Michael Angelo Riga is an examiner in Tech Center 1600 and Art Unit 1633. He has 70 resolved cases in his portfolio. His allowance rate is 57.1 percent. The data shows a very high interview lift of 61.2 percent. This suggests that interviews are an exceptionally powerful tool for moving toward an allowance with this examiner.

The median time to allowance is 1546 days. While the 70 resolved cases represent a smaller sample than some colleagues, the 61.2 percent lift is a standout metric. Applicants should prioritize interviews to leverage this 61.2 percent increase in allowance probability. The 1546 median days indicate a relatively long prosecution timeline.

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

Performance Statistics

57.1%
Allow Rate
-2.9% vs TC avg
104
Total Applications
+61.2%
Interview Lift
1546
Avg Prosecution Days
Based on 70 resolved cases, 2023–2026

Rejection Statute Breakdown

4.1%
§101 Eligibility
14.8%
§102 Novelty
40.2%
§103 Obviousness
34.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18719340 CONSTITUTIVE PRODUCTION OF MICROCINS TO TARGET ENTERIC BACTERIA Non-Final OA UNIVERSITY OF MASSACHUSETTS
17612669 MODIFIED VIRAL PARTICLES AND USES THEREOF Non-Final OA Regeneron Pharmaceuticals, Inc.
16970216 COMPOSITIONS AND METHODS FOR MEMBRANE PROTEIN DELIVERY Final Rejection FLAGSHIP PIONEERING INNOVATIONS V, INC.
17309403 AAV VIRAL VECTORS AND USES THEREOF Final Rejection NOVARTIS AG
18258027 IMPROVED PHARMACEUTICAL COMPOSITIONS CONTAINING ADENO-ASSOCIATED VIRAL VECTOR Non-Final OA Pfizer Inc.
17998330 COMPOSITIONS USEFUL IN TREATMENT OF KRABBE DISEASE Non-Final OA The Trustees of the University of Pennsylvania
18546746 Transplantation of Liver Cells by Administration to the Biliary Tree of the Liver Final Rejection Cambridge Enterprise Limited
17427648 Liposomal Nanoparticle Final Rejection NewSouth Innovations Pty Limited
17268635 PHARMACEUTICAL COMPOSITION FOR TREATING CARTILAGE DAMAGE, COMPRISING NASAL SEPTUM CHONDROCYTES Final Rejection THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION
17917198 B7-H3 CHIMERIC ANTIGEN RECEPTORS Final Rejection St. Jude Children's Research Hospital, Inc.
18843544 WHARTON'S JELLY PREPARATION EFFECTIVE FOR PROMOTING BONE REGENERATION Non-Final OA NATIONAL YANG MING CHIAO TUNG UNIVERSITY
17434513 RECOMBINANT VECTORS COMPRISING ARYLSULFATASE A AND THEIR USES IN STEM CELL THERAPY FOR THE TREATMENT OF METACHROMATIC LEUKODYSTROPHY Final Rejection VERSITECH LIMITED
18684082 ENGINEERED ADAR-RECRUITING RNAS AND METHODS OF USE THEREOF Non-Final OA Edigene Therapeutics (Beijing) Inc.

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