Prosecution Insights
Last updated: October 26, 2026

Ephrem Zeru Mebrahtu, USPTO Patent Examiner

Listed by the USPTO as MEBRAHTU, EPHREM ZERU

Tech Center 2800 • Art Units: 2872

This examiner grants 75% of resolved cases

Analysis

MEBRAHTU, EPHREM ZERU has 513 resolved cases in art unit 2872 and tech center 2800. The profile records a 74.9% allowance rate, an 8.6% interview lift, and median time to allowance of 1017 days. The examination record is substantial and shows a majority allowance outcome. The comparatively modest interview measure suggests that interviews may provide support without being the dominant driver of outcomes.

LG Innotek Co., Ltd., Apple Inc., and Canon Inc. are the listed companies. The associated firms are OLIFF PLC, Ascent Intellectual Property Law, and BAKER BOTTS L.L.P. Practitioners may focus on precise claim construction and written responses, using interviews to confirm the examiner's understanding and test possible paths to allowance. The median timing also supports planning for prosecution that may extend beyond an initial office-action cycle.

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

Performance Statistics

74.9%
Allow Rate
+6.9% vs TC avg
544
Total Applications
+8.6%
Interview Lift
1017
Avg Prosecution Days
Based on 513 resolved cases, 2023–2026

Rejection Statute Breakdown

1.4%
§101 Eligibility
23.1%
§102 Novelty
51.5%
§103 Obviousness
19.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18979536 OPERATION RING, LENS DEVICE, AND METHOD OF MANUFACTURING OPERATION RING Non-Final OA FUJIFILM Corporation
18807829 Electronic Device System With Supplemental Lenses Final Rejection Apple Inc.
18925480 LENS BARREL, AND OPTICAL DEVICE Non-Final OA CANON KABUSHIKI KAISHA
19076237 FIXED-FOCUS LENS AND PROJECTOR Non-Final OA SEIKO EPSON CORPORATION
19018647 IMAGING OPTICAL SYSTEM, AND IMAGING DEVICE AND CAMERA SYSTEM PROVIDED WITH SAME Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18979436 OPTICAL ELEMENT DRIVING MECHANISM Non-Final OA Actutek Corporation
18748491 ACCESSORY Non-Final OA NIKON CORPORATION
18870551 OPTICAL SYSTEM AND CAMERA MODULE COMPRISING SAME Non-Final OA LG INNOTEK CO., LTD.
18953409 CAMERA DEVICE Non-Final OA LG INNOTEK CO., LTD.
17369655 LENS ASSEMBLY Non-Final OA SAMSUNG ELECTRO-MECHANICS CO., LTD.
19061047 HEAD-UP DISPLAY DEVICE Non-Final OA Yazaki Corporation
18791221 PERSONALIZED EYEWEAR MANUFACTURING Non-Final OA Zenni Optical, Inc.

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Frequently Asked Questions

What is examiner Ephrem Zeru Mebrahtu's allowance rate?

74.9% of resolved applications examined by Ephrem Zeru Mebrahtu were allowed (513 resolved cases), compared with 64.9% across Art Unit 2872 over the last five years.

Does an interview help with examiner Ephrem Zeru Mebrahtu?

This examiner's interview lift is +8.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Ephrem Zeru Mebrahtu take to allow a patent?

Applications allowed by Ephrem Zeru Mebrahtu took 1,017 days on average from filing to allowance.

Which art unit does examiner Ephrem Zeru Mebrahtu work in?

Ephrem Zeru Mebrahtu examines applications in Art Unit 2872 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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