Prosecution Insights
Last updated: October 01, 2026

Examiner: ZAYKOVA-FELDMAN, LYUDMILA

Tech Center 2800 • Art Units: 2857 2865

This examiner grants 68% of resolved cases

Analysis

Lyudmila Zaykova-Feldman is an examiner in Art Unit 2857 of Tech Center 2800. She has 132 resolved cases with an allowance rate of 68.2 percent. This 68.2 percent rate is a metric for applicants and suggests a path to allowance. The median days to allowance is 1175. This 1175-day figure is a metric for managing expectations. Practitioners can use this timeline to plan their prosecution in Tech Center 2800.

The interview lift of 24.7 percent suggests that interviews are a tool for securing an allowance. This 24.7 percent lift should be a consideration in prosecution strategy, as it offers a boost to the odds of success. With 132 resolved cases, the 68.2 percent allowance rate provides a view of the examiner's tendencies. The lift indicates that the examiner is open to resolving issues through discussion in Art Unit 2857. The 1175-day median is a specific point of reference for the process.

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

Performance Statistics

68.2%
Allow Rate
At TC average
142
Total Applications
+24.7%
Interview Lift
1175
Avg Prosecution Days
Based on 132 resolved cases, 2023–2026

Rejection Statute Breakdown

27.0%
§101 Eligibility
8.1%
§102 Novelty
51.9%
§103 Obviousness
12.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18653466 SUBSURFACE STRATIGRAPHIC FRAMEWORK Non-Final OA Schlumberger Technology Corporation
18165484 METHOD AND DEVICE FOR OPERATING AN INFRASTRUCTURE SENSOR SYSTEM Non-Final OA Robert Bosch GmbH
18645624 BATTERY MONITORING METHOD AND BATTERY MONITORING DEVICE Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18656146 METHOD FOR INSPECTING A POWERPLANT COMPONENT USING AN INSPECTION SCOPE Non-Final OA RTX Corporation
18272141 System, Method, and Apparatus for Sensor Drift Compensation Final Rejection CARNEGIE MELLON UNIVERSITY
17192355 SYSTEMS AND METHODS FOR PROCESS CHAMBER HEALTH MONITORING AND DIAGNOSTICS USING VIRTUAL MODEL Final Rejection APPLIED MATERIALS, INC.
18669568 ROOT CAUSE ANALYSIS FOR ALARM EVENTS Non-Final OA Honeywell International Inc.
18800115 METHOD FOR ESTIMATING GROUPING EFFICIENCY, ELECTRONIC DEVICE AND STORAGE MEDIUM Non-Final OA EVE ENERGY CO., LTD.

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