Prosecution Insights
Last updated: October 02, 2026

Examiner: CASTILLO-TORRES, KEISHA Y

Tech Center 2600 • Art Units: 2659

This examiner grants 75% of resolved cases

Analysis

Keisha Y Castillo-Torres has handled 116 resolved cases in Art Unit 2659 of Tech Center 2600. Her allowance rate of 75.0% indicates a generally positive outlook for applications under her review. This 75.0% rate suggests that a majority of cases reach a successful conclusion. The 116 resolved cases provide a consistent indicator of the examiner's receptiveness to patentable subject matter.

The interview lift is recorded at 31.9%. This figure represents the increase in the likelihood of allowance when an interview is conducted compared to the baseline allowance rate of 75.0%. This 31.9% lift suggests that direct engagement is a highly productive tactic for resolving outstanding issues. Practitioners should consider scheduling an interview to further improve the probability of securing a grant.

The median time to allowance for these cases is 1045 days. This 1045-day metric provides a clear expectation for the duration of the prosecution process from filing to the issuance of a patent. When combined with the 31.9% lift, these figures suggest that active communication is a key factor in successful prosecution. Practitioners should plan their strategies around this 1045-day median in Art Unit 2659.

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

Performance Statistics

75.0%
Allow Rate
+13.0% vs TC avg
148
Total Applications
+31.9%
Interview Lift
1045
Avg Prosecution Days
Based on 116 resolved cases, 2023–2026

Rejection Statute Breakdown

27.7%
§101 Eligibility
12.7%
§102 Novelty
47.7%
§103 Obviousness
5.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18624838 VECTOR QUANTIZATION OF DECORRELATED SPECTRAL COEFFICIENTS Non-Final OA APPLE INC.
18412343 DYNAMIC DASHBOARD GENERATION BASED ON FOCUS OF CONVERSATION Final Rejection The Toronto-Dominion Bank
19018421 PROVIDING CERTAIN REASONING WITH RESPECT TO FULFILLMENT OF AN ASSISTANT COMMAND Non-Final OA GOOGLE LLC
18965988 DETECTING ERRORS IN CHAT BOT OUTPUTS USING LANGUAGE MODEL NEURAL NETWORKS Non-Final OA Google LLC
19023457 VOICE DISPLAY DEVICE, VOICE DISPLAY SYSTEM, VOICE DISPLAY METHOD, AND STORAGE MEDIUM Non-Final OA HONDA MOTOR CO., LTD.
18590222 FAITHFUL GENERATION OF OUTPUT TEXT FOR MULTIMODAL APPLICATIONS Non-Final OA QUALCOMM Incorporated
18385284 AGE-SENSITIVE AUTOMATIC SPEECH RECOGNITION Final Rejection Adeia Guides Inc.
18741267 ELECTRONIC DEVICE AND CONTROL METHOD THEREOF Final Rejection Kia Corporation
19033851 TEXT SUMMARIZATION TECHNIQUES Non-Final OA Amazon Technologies, Inc.
18715189 SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND SIGNAL PROCESSING PROGRAM Non-Final OA NTT, Inc.
18687871 SILENCE DESCRIPTOR USING SPATIAL PARAMETERS Final Rejection NOKIA TECHNOLOGIES OY
18999990 PERSONALIZED NATURAL LANGUAGE PROCESSING SYSTEM Non-Final OA Microsoft Technology Licensing, LLC
18966018 MACHINE LEARNING MODEL WITH CONSTRAINED OUTPUT TOKEN VOCABULARY Non-Final OA Microsoft Technology Licensing, LLC
18928604 FORMATIVE FEEDBACK ENGINE(S) FOR PROVIDING COMMENTARY INSIGHTS ON TEXT-BASED ASSESSMENTS Non-Final OA Microsoft Technology Licensing, LLC
17961189 MACHINE LEARNING-BASED DIALOGUE AUTHORING ENVIRONMENT Non-Final OA Microsoft Technology Licensing, LLC
18665978 METHODS FOR IMPROVING LISTWISE RANKING IN LARGE LANGUAGE MODELS Final Rejection Comcast Cable Communications, LLC
18974450 METHOD FOR GENERATING DIALOGUE, ELECTRONIC DEVICE, AND STORAGE MEDIUM Non-Final OA BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.
18302464 GENERATING, APPLYING, AND VERIFYING AUDIO SIGNATURES FOR DIGITAL DOCUMENTS Final Rejection Dropbox, Inc.
18313426 IMAGE PROCESSING TECHNIQUES FOR GENERATING PREDICTIONS Final Rejection Optum Services (Ireland) Limited
18678143 METHOD, DEVICE, AND PROGRAM PRODUCT FOR DETERMINING SOURCE OF SYNTHESIZED AUDIO Final Rejection Dell Products L.P.
17864252 GENERATING RULES FOR MANAGING AN INFRASTRUCTURE FROM NATURAL-LANGUAGE EXPRESSIONS Final Rejection NUTANIX, INC.
17671286 COMPUTER-BASED TECHNIQUES FOR VISUALLY NARRATING RECORDED MEETING CONTENT Non-Final OA AUTODESK, INC.

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