Prosecution Insights
Last updated: April 19, 2026

Perkins Coie LLP - Citigroup

10 pending office actions • 2 clients

Portfolio Summary

10
Total Pending OAs
4
Final Rejections
6
Non-Final OAs

Client Portfolio (2 clients)

Client (Assignee)Pending OAs
Citibank, N.A. 9
Citi Canada Technology Services Ulc 1

Pending Office Actions

App #TitleClientExaminerArt UnitStatusFiled
19420652 Untitled Citibank, N.A. CHEN, ALAN S 2125 Non-Final OA
19418868 Untitled Citibank, N.A. KRAISINGER, EMILY MARIE 3626 Non-Final OA
19207360 Untitled Citibank, N.A. CHEN, ALAN S 2125 Non-Final OA
19325306 HIERARCHICAL CASCADE ARCHITECTURE OF LANGUAGE MODELS FOR MULTI-STAGE QUERY CLASSIFICATION AND AGENT ROUTING Citibank, N.A. SUN, XIUQIN 2857 Final Rejection Sep 10, 2025
19307924 DETECTING DATA ANOMALIES USING ARTIFICIAL INTELLIGENCE Citibank, N.A. VU, BAI DUC 2163 Non-Final OA Aug 22, 2025
19301756 MULTI-VARIABLE OPTIMIZATION FOR ROUTING REQUESTS TO LANGUAGE MODELS Citibank, N.A. SMITH, BRIAN M 2122 Final Rejection Aug 15, 2025
18951120 DYNAMIC EVALUATION OF LANGUAGE MODEL PROMPTS FOR MODEL SELECTION AND OUTPUT VALIDATION AND METHODS AND SYSTEMS OF THE SAME Citibank, N.A. BAYOU, YONAS A 2499 Non-Final OA Nov 18, 2024
18907414 DYNAMIC INPUT-SENSITIVE VALIDATION OF MACHINE LEARNING MODEL OUTPUTS AND METHODS AND SYSTEMS OF THE SAME Citibank, N.A. BAYOU, YONAS A 2499 Non-Final OA Oct 04, 2024
18661366 DISTRIBUTED DATABASE METHODS AND SYSTEMS Citibank, N.A. IMMANUEL, ILSE I 3699 Final Rejection May 10, 2024
18387348 APPLICATION FUNCTIONALITY TESTING, RESILIENCY TESTING, CHAOS TESTING, AND PERFORMANCE TESTING USING MACHINE LEARNING Citi Canada Technology Services Ulc AGUILERA, TODD 2192 Final Rejection Nov 06, 2023

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