Prosecution Insights
Last updated: October 26, 2026

Cassandra Senn Grizer, USPTO Patent Examiner

Listed by the USPTO as GRIZER, CASSANDRA SENN

Tech Center 1600 • Art Units: 1600 1671 1672 1675

This examiner grants 70% of resolved cases

Analysis

Cassandra Senn Grizer is a USPTO patent examiner in tech center 1600 and art unit 1600. The available record includes 10 resolved cases, a 70.0% allowance rate, and a median of 1143 days to allowance. The interview lift is 48.0%, indicating a substantial measured association between interviews and allowance outcomes. With only 10 resolved cases, the profile is limited in scope, so practitioners should use the figures as an initial signal and review comparable applications directly.

The listed companies are Astrazeneca AB, CJ CheilJedang Corporation, and Massachusetts Institute of Technology. The leading firms are ARENTFOX SCHIFF LLP, Riverside Law LLP, and BakerHostetler. These organizations place the available record in pharmaceutical, biotechnology, and institutional research contexts.

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

Performance Statistics

70.0%
Allow Rate
+10.0% vs TC avg
54
Total Applications
+48.0%
Interview Lift
1143
Avg Prosecution Days
Based on 10 resolved cases, 2023–2026

Rejection Statute Breakdown

7.6%
§101 Eligibility
14.1%
§102 Novelty
34.2%
§103 Obviousness
37.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18277879 NOVEL BACTERIOPHAGE HAVING CLOSTRIDIUM PERFRINGENS-SPECIFIC BACTERICIDAL EFFECT AND ANTIBACTERIAL COMPOSITION COMPRISING SAME Non-Final OA CJ CheilJedang Corporation
18686564 MULTIVALENT VIRAL PARTICLES Non-Final OA CORNELL UNIVERSITY
18273053 MICROTUBULE DESTABILIZER ADDITIVES TO INCREASE RECOMBINANT VIRAL VECTOR TITERS Non-Final OA Biogen MA Inc.

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Frequently Asked Questions

What is examiner Cassandra Senn Grizer's allowance rate?

70.0% of resolved applications examined by Cassandra Senn Grizer were allowed (10 resolved cases), compared with 37.3% across Art Unit 1600 over the last five years.

Does an interview help with examiner Cassandra Senn Grizer?

This examiner's interview lift is +48.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Cassandra Senn Grizer take to allow a patent?

Applications allowed by Cassandra Senn Grizer took 1,143 days on average from filing to allowance.

Which art unit does examiner Cassandra Senn Grizer work in?

Cassandra Senn Grizer examines applications in Art Unit 1600 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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