Prosecution Insights
Last updated: October 02, 2026

Examiner: KASSA, TIGABU

Tech Center 1600 • Art Units: 1615 1619

This examiner grants 37% of resolved cases

Analysis

Tigabu Kassa, working in Tech Center 1600 and Art Unit 1615, has resolved 722 cases. The examiner maintains an allowance rate of 36.6%. For successful applications, the median days to allowance is 1562. This duration provides a benchmark for the prosecution timeline for those seeking an allowance.

Interviews appear to be an effective tool, as evidenced by an interview lift of 27.8%. This lift suggests that direct engagement with the examiner may help increase the 36.6% base allowance rate. Practitioners should factor this 27.8% lift into their strategy for the 722 resolved cases. The 1562-day median pendency is a key consideration for applicants. Direct communication may be a productive way to navigate the examination process in Tech Center 1600.

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

Performance Statistics

36.7%
Allow Rate
-23.3% vs TC avg
793
Total Applications
+27.9%
Interview Lift
1561
Avg Prosecution Days
Based on 723 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
11.2%
§102 Novelty
65.4%
§103 Obviousness
15.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17727123 EFFERVESCENT ORAL COMPOSITION Non-Final OA NICOVENTURES TRADING LIMITED
18315330 BIOMIMETIC ARTIFICIAL CELLS: ANISOTROPIC SUPPORTED LIPID BILAYERS ON BIODEGRADABLE MICRO AND NANOPARTICLES FOR SPATIALLY DYNAMIC SURFACE BIOMOLECULE PRESENTATION Final Rejection The Johns Hopkins University
18187526 CHEMICAL COMPOSITION Non-Final OA The Johns Hopkins University
16851177 BIOCOMPATIBLE ORGANOGEL MATRICES FOR INTRAOPERATIVE PREPARATION OF A DRUG DELIVERY DEPOT Final Rejection DePuy Synthes Products, Inc.
18438184 BOTTLEBRUSH POLYMERS AND METHODS THEREOF Non-Final OA Regents of the University of Minnesota
16858439 Coated Drug Compositions and Methods of Preparing the Same Final Rejection Applied Materials, Inc.
18804677 PHARMACEUTICAL FORMULATIONS OF BICTEGRAVIR AND LENACAPAVIR Non-Final OA Gilead Sciences, Inc.
18538022 BIODEGRADABLE COMPACTED FORMULATIONS AND METHODS OF USE AND MANUFACTURE THEREOF Final Rejection Purdue Research Foundation
18872480 COMPOSITION FOR CARING FOR AND/OR MAKING UP KERATIN MATERIALS Non-Final OA L'OREAL
18867064 CONCENTRATED CLEANSING COMPOSITIONS Non-Final OA Conopco, Inc., d/b/a UNILEVER
17530559 PHARMACEUTICAL COMPOSITION, PHARMACEUTICAL DOSAGE FORM, PROCESS FOR THEIR PREPARATION, METHODS FOR TREATING AND USES THEREOF Final Rejection Boehringer Ingelheim International GmbH
17293621 SURFACTANT-STABILIZED FLUID INTERFACE AND DISPERSION COMPRISING ONE OR MORE DROPLETS HAVING A SURFACTANT STABILIZED FLUID INTERFACE Final Rejection MAX-PLANCK-GESELLSCHAFT ZUR FÖRDERUNG DER WISSENSCHAFTEN E.V.
18686305 IRON COMPOSITIONS AND METHODS OF MAKING AND USING THEM Non-Final OA American Regent, Inc.
17915826 ORAL COMPLEX TABLET COMPRISING SITAGLIPTIN, DAPAGLIFLOZIN, AND METFORMIN Final Rejection HANMI PHARM. CO., LTD.
18256752 SUSTAINED RELEASE FORMULATIONS OF CRYSTALLINE DRUGS Final Rejection QUEEN MARY UNIVERSITY OF LONDON
18716692 COMPOSITIONS COMPRISING MODIFIED PHOSPHOLIPIDS AND USES THEREOF Non-Final OA The Children's Medical Center Corporation
17946610 POLYELECTROLYTE-LAYER FORMING BLOCK COPOLYMERS AND COMPOSITIONS AND USES THEREOF Final Rejection Rhodia Operations
18691949 ANTI-AGING AGENT, COSMETIC PRODUCT, WET TOWEL, AND HYGIENE PRODUCT Non-Final OA VB JAPAN TECHNOLOGY CO., LTD.
18281411 NOVEL ANTICANCER THERAPY Non-Final OA TERMÉSZETTUDOMÁNYI KUTATÓKÖZPONT

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