Prosecution Insights
Last updated: October 26, 2026

Joanne Hama, USPTO Patent Examiner

Listed by the USPTO as HAMA, JOANNE

Tech Center 4100 • Art Units: 1600 1632 1641 1642 1643 1644 1645 1646 1647 1671

This examiner grants 25% of resolved cases

Analysis

HAMA, JOANNE has resolved 268 cases in Tech Center 4100 and Art Unit 1600. The allowance rate is 25.4%, while the median time to allowance is 1344 days. This combination indicates that prosecution outcomes in this docket may require sustained attention over a comparatively long examination cycle.

Interviews are associated with a 40.2% lift, making interview preparation a potentially important part of claim strategy for matters before this examiner. The recorded company mix includes The Regents of the University of California, University of Massachusetts, and Novartis AG. Frequently represented firms include COOLEY LLP, Knobbe, Martens, Olson & Bear, LLP, and Morgan, Lewis & Bockius LLP (WA), which may provide useful examples of prosecution approaches in this docket.

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

Performance Statistics

25.4%
Allow Rate
-34.6% vs TC avg
345
Total Applications
+40.2%
Interview Lift
1344
Avg Prosecution Days
Based on 268 resolved cases, 2023–2026

Rejection Statute Breakdown

6.6%
§101 Eligibility
15.6%
§102 Novelty
38.1%
§103 Obviousness
25.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18042989 METHODS AND COMPOSITIONS FOR TREATING GLIOBLASTOMA Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
17763116 RECEPTORS WITH HETEROLOGOUS TRANSMEMBRANE DOMAIN Non-Final OA The Regents of the University of California
18035609 FC ALPHA RECEPTOR BINDING ANTIBODY Non-Final OA KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

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Frequently Asked Questions

What is examiner Joanne Hama's allowance rate?

25.4% of resolved applications examined by Joanne Hama were allowed (268 resolved cases), compared with 37.3% across Art Unit 1600 over the last five years.

Does an interview help with examiner Joanne Hama?

This examiner's interview lift is +40.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Joanne Hama take to allow a patent?

Applications allowed by Joanne Hama took 1,344 days on average from filing to allowance.

Which art unit does examiner Joanne Hama work in?

Joanne Hama examines applications in Art Unit 1600 in Tech Center 4100.

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