Prosecution Insights
Last updated: October 27, 2026

Diana B Johannsen, USPTO Patent Examiner

Listed by the USPTO as JOHANNSEN, DIANA B

Tech Center 1600 • Art Units: 1634 1682 1683

This examiner grants 53% of resolved cases

Analysis

JOHANNSEN, DIANA B is assigned to USPTO Tech Center 1600 and Art Unit 1634. The record includes 506 resolved cases, with a 53.2% allowance rate and a median of 1485 days to allowance. Interview lift is 42.8%, identifying interviews as a potentially important tool for influencing prosecution outcomes.

The listed companies are The Regents of the University of California, Thermo Fisher Scientific, and Singular Genomics Systems Inc. The associated firms are MERCHANT & GOULD P.C., ARENTFOX SCHIFF LLP, and BROWN RUDNICK LLP. The extended pendency supports early planning for claim alternatives, evidence, and response timing.

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

Performance Statistics

53.2%
Allow Rate
-6.8% vs TC avg
552
Total Applications
+42.8%
Interview Lift
1485
Avg Prosecution Days
Based on 506 resolved cases, 2023–2026

Rejection Statute Breakdown

17.8%
§101 Eligibility
12.2%
§102 Novelty
25.4%
§103 Obviousness
38.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18434556 NOVEL IMMUNOPROBE-BASED METHOD TO ASSESS ORGAN INJURY STATUS THROUGH A BIOFLUID-BASED CELL-FREE DNA (CFDNA) ASSAY Final Rejection The Regents of the University of California
18049257 ASSAY FOR PRE-OPERATIVE PREDICTION OF ORGAN FUNCTION RECOVERY Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
17783263 TARGETED PHAGE THERAPY Non-Final OA The Regents of the University of California
15713597 RECORDING AND MAPPING LINEAGE INFORMATION AND MOLECULAR EVENTS IN INDIVIDUAL CELLS Non-Final OA California Institute of Technology
18580984 ALL-IN-ONE RNA SEQUENCING ASSAY AND USES THEREOF Non-Final OA The Curators of the University of Missouri
17822332 TARGETED MEASURE OF TRANSCRIPTIONAL ACTIVITY RELATED TO HORMONE RECEPTORS Non-Final OA Yale University

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Diana B Johannsen's allowance rate?

53.2% of resolved applications examined by Diana B Johannsen were allowed (506 resolved cases), compared with 30.4% across Art Unit 1634 over the last five years.

Does an interview help with examiner Diana B Johannsen?

This examiner's interview lift is +42.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Diana B Johannsen take to allow a patent?

Applications allowed by Diana B Johannsen took 1,485 days on average from filing to allowance.

Which art unit does examiner Diana B Johannsen work in?

Diana B Johannsen examines applications in Art Unit 1634 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month