Prosecution Insights
Last updated: October 02, 2026

Examiner: STAHL, MICHAEL J

Tech Center 2800 • Art Units: 2828 2874

This examiner grants 90% of resolved cases

Analysis

Michael J. Stahl is an examiner in Tech Center 2800 and Art Unit 2828. He has overseen 1282 resolved cases. The examiner demonstrates an allowance rate of 90.1 percent, which indicates that the vast majority of applications result in a patent grant. This high frequency of issuance provides a predictable path for applicants navigating the prosecution process in this unit.

The median time to allowance is 727 days. This figure represents the typical duration for applications to move from filing to a successful grant. Practitioners can use this 727 day median to estimate the timeline for their cases. The efficiency shown in these 1282 resolved cases is a notable feature of the examiner's historical performance.

Direct engagement with the examiner yields an interview lift of 7.5 percent. This positive lift suggests that interviews are a useful tool for further increasing the chances of an allowance. Even with a base allowance rate of 90.1 percent, the 7.5 percent lift indicates that verbal communication remains a beneficial strategy. These combined metrics offer a comprehensive view of the examination environment in Art Unit 2828.

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

Performance Statistics

90.1%
Allow Rate
+22.1% vs TC avg
1,295
Total Applications
+7.5%
Interview Lift
727
Avg Prosecution Days
Based on 1282 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
41.4%
§102 Novelty
23.9%
§103 Obviousness
29.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18541198 MULTILEVEL RETRO-COUPLING DEVICE Non-Final OA COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
18624198 CO-PACKAGING WITH SILICON PHOTONICS HYBRID PLANAR LIGHTWAVE CIRCUIT Non-Final OA Intel Corporation
18759441 SYSTEM FOR COUPLING A MULTI-CORE OPTICAL FIBER WITH AT LEAST ONE SINGLE-CORE OPTICAL FIBER, AND CORRESPONDING COUPLING METHOD Non-Final OA Orange
18672293 DEVICES, SYSTEMS, AND METHODS FOR ATTACHING SPLICE TRAYS Non-Final OA CORNING RESEARCH & DEVELOPMENT CORPORATION
18758528 ADAPTER FOR OPTICAL FIBER CONNECTORS Non-Final OA Microsoft Technology Licensing, LLC
18342127 PHOTONIC OPTICAL FIBER PACKAGING Non-Final OA International Business Machines Corporation
18777573 OPTICAL MODULATOR AND PACKAGE Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18619829 OPTICAL DEVICE Final Rejection TDK CORPORATION
18633927 ELECTRONIC DEVICE Non-Final OA Advanced Semiconductor Engineering, Inc.
18846124 OPTICAL WAVEGUIDE ELEMENT, AND OPTICAL MODULATION DEVICE AND OPTICAL TRANSMISSION DEVICE USING SAME Non-Final OA SUMITOMO OSAKA CEMENT CO., LTD.
18780660 WAVEGUIDE DEVICE AND OPTICAL COUPLING STRUCTURE AND OPTOELECTRONIC SYSTEM USING SAME Non-Final OA AIP Inc.
18780529 LIGHT SOURCE DEVICE AND OPTICAL COUPLING STRUCTURE AND OPTOELECTRONIC SYSTEM USE THEREOF Non-Final OA AIP Inc.

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