Prosecution Insights
Last updated: October 01, 2026

Examiner: RUTHKOSKY, MARK

Tech Center 1700 • Art Units: 1700 1723 1782 1785 1795

This examiner grants 64% of resolved cases

Analysis

Mark Ruthkosky is an examiner in Tech Center 1700 and Art Unit 1700. The examiner has 58 resolved cases. The allowance rate for these matters is 62.1%. This metric provides a baseline for the likelihood of securing a patent grant during the prosecution process. The 62.1% rate is a primary data point for evaluating the probability of success in this specific area.

The interview lift is 9.6%. This value measures the increase in the probability of allowance following an interview. A lift of 9.6% indicates that engaging in a direct dialogue with the examiner can be a productive strategy for applicants. Practitioners should weigh this figure when deciding whether to request a formal interview to address outstanding rejections.

The median days to allowance is 1516. This figure represents the typical time span from the start of prosecution to the issuance of a patent. A median of 1516 days informs the scheduling and budget expectations for applicants. This duration is a factor in the overall prosecution timeline for the 58 resolved cases handled by this examiner.

In the assigned Tech Center, the examiner's record is defined by these metrics. The interview lift serves as a tool for navigating the prosecution process. The median pendency remains a central consideration for strategic planning.

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

Performance Statistics

64.5%
Allow Rate
-0.5% vs TC avg
73
Total Applications
+13.4%
Interview Lift
1527
Avg Prosecution Days
Based on 62 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
24.1%
§102 Novelty
53.7%
§103 Obviousness
19.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18616501 BATTERY SYSTEM WITH CELL SPACERS BETWEEN BATTERY CELLS AND A METHOD OF MANUFACTURING THEREOF Non-Final OA SAMSUNG SDI CO., LTD.
18592966 SECONDARY BATTERY Non-Final OA Samsung SDI Co., Ltd.
18701251 SLURRY COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY FUNCTIONAL LAYER, SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY Non-Final OA ZEON CORPORATION

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