Prosecution Insights
Last updated: October 26, 2026

Marrit Eyassu, USPTO Patent Examiner

Listed by the USPTO as EYASSU, MARRIT

Tech Center 2800 • Art Units: 2855 2856 2861

This examiner grants 74% of resolved cases

Analysis

EYASSU, MARRIT is assigned to technology center 2800 and art unit 2855. The profile records 585 resolved cases, an allowance rate of 74.2%, an interview lift of 15.0%, and a median of 1053 days to allowance. The substantial record supports a stable reading of a generally favorable allowance outcome with a modest interview association.

The listed companies are Saudi Arabian Oil Company, Merck Patent GmbH, and RTX Corporation. The associated firms are Bayramoglu Law Offices LLC, BLANK ROME LLP, and Chrisman Gallo Tochtrop LLC. Interviews may assist in narrowing disputes, although the measured lift is not large. Applicants should also account for the median timing when coordinating prosecution with product development, licensing, or portfolio review.

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

Performance Statistics

74.2%
Allow Rate
+6.2% vs TC avg
613
Total Applications
+15.0%
Interview Lift
1053
Avg Prosecution Days
Based on 585 resolved cases, 2023–2026

Rejection Statute Breakdown

2.6%
§101 Eligibility
7.4%
§102 Novelty
60.5%
§103 Obviousness
19.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18853691 Multi-Use Sensor Holder Non-Final OA Merck Patent GmbH
18750704 FLUID TRANSFER IN A BIOLOGICAL ANALYSIS SYSTEM Final Rejection Beckman Coulter, Inc.
18600383 OPTICAL INSPECTION SYSTEM AUTOMATICALLY DEPLOYED ROVER Final Rejection RTX Corporation
18853920 AUTOMATIC ANALYSIS SYSTEM AND MOBILE TERMINAL Non-Final OA Hitachi High-Tech Corporation
18883308 CORROSION-RESISTANT ACOUSTIC RESONANCE SENSOR DEVICES FOR RADICAL SPECIES DETECTION Non-Final OA Applied Materials, Inc.
18743228 SENSOR DEVICE Final Rejection THE UNIVERSITY OF TOKYO
18742355 MICROELECTROMECHANICAL SENSOR ASSEMBLY AND PROCESS FOR MANUFACTURING A MICROELECTROMECHANICAL SENSOR ASSEMBLY Non-Final OA STMicroelectronics International N.V.
18399920 MOISTURE DETECTOR CONFIGURED TO DETECT MOISTURE IN A CABLE Non-Final OA PPC BROADBAND, INC.

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Frequently Asked Questions

What is examiner Marrit Eyassu's allowance rate?

74.2% of resolved applications examined by Marrit Eyassu were allowed (585 resolved cases), compared with 76.8% across Art Unit 2855 over the last five years.

Does an interview help with examiner Marrit Eyassu?

This examiner's interview lift is +15.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Marrit Eyassu take to allow a patent?

Applications allowed by Marrit Eyassu took 1,053 days on average from filing to allowance.

Which art unit does examiner Marrit Eyassu work in?

Marrit Eyassu examines applications in Art Unit 2855 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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