USPTO Art Unit 2491 Prosecution Statistics

Art Unit Information

Art Unit: 2491
Group: 2490
Tech Center: 2400
Total Cases: 7,072
Last Active: January 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19027830RESOURCE PROTECTION AND VERIFICATION WITH BIDIRECTIONAL NOTIFICATION ARCHITECTUREJanuary 2025June 2025Allow510NoNo
18901801AUTOMATED PREEMPTIVE POLYMORPHIC DECEPTIONSeptember 2024March 2025Allow510YesNo
18757651AUTHENTICATION DEVICE, AUTHENTICATION METHOD, AND RECORDING MEDIUMJune 2024May 2025Allow1010NoNo
18749199PRIVACY-PRESERVING DATA COLLECTINGJune 2024May 2025Allow1110NoNo
18718764FILE SHARING METHOD AND SYSTEM, ELECTRONIC DEVICE AND READABLE STORAGE MEDIUMJune 2024October 2024Allow400NoNo
18738985SYSTEM AND METHOD FOR DECENTRALIZED DATA MANAGEMENT AND DYNAMIC VERIFICATION, VALUATION, AND MONETIZATION OF DATA QUERIESJune 2024August 2024Allow200NoNo
18668671METHOD AND SYSTEM FOR DETECTION OF PHISHING EMAILS AND SUSPECT MALICIOUS EXECUTABLE HYPERLINKSMay 2024March 2025Allow1010NoNo
18639241RESOURCE PROTECTION AND VERIFICATION WITH BIDIRECTIONAL NOTIFICATION ARCHITECTUREApril 2024November 2024Allow700NoNo
18613112MULTI-STEP APPROACH FOR RANSOMWARE DETECTIONMarch 2024April 2025Allow1210YesNo
18609904MULTI-LEVEL SECURITY ANALYSIS AND INTERMEDIATE DELIVERY OF AN ELECTRONIC MESSAGEMarch 2024January 2025Allow1010NoNo
18609298DOMAIN SQUATTING DETECTIONMarch 2024March 2025Allow1210NoNo
18605239Physical Environment Based Account AuthenticationMarch 2024January 2025Allow1110NoNo
18601498Consumer Choice for Broadband Application and Content ServicesMarch 2024March 2025Allow1210NoNo
18600739ELECTRONIC SYSTEM FOR PREDICTING, DETECTING, AND PREVENTING UNAUTHORIZED ACCESS EVENTS ASSOCIATED WITH ELECTRONIC SYSTEMSMarch 2024January 2025Allow1110NoNo
18600377Information security system and method for denial-of-service detectionMarch 2024November 2024Allow910NoNo
18591669USER AND GROUP SPECIFIC THREAT PROTECTION SYSTEM AND METHODFebruary 2024June 2025Allow1520NoNo
18589792AUTOMATED BOT BLOCKINGFebruary 2024December 2024Allow1010NoNo
18588077PASSWORD SIMILARITY CHECKING USING HOMOMORPHIC ENCRYPTION OPERATIONSFebruary 2024January 2025Allow1000YesNo
18586778COMPUTER-BASED SYSTEMS CONFIGURED FOR DETECTING AND SANDBOXING EXTERNAL RESOURCES AND METHODS OF USE THEREOFFebruary 2024January 2025Allow1110NoNo
18440917DETECTION OF PERSONALLY IDENTIFIABLE INFORMATIONFebruary 2024April 2025Allow1410NoNo
18439655SYSTEM FOR SECURE CHANNEL SELECTION FOR MULTI-FACTOR AUTHENTICATION USING NON-FUNGIBLE ELECTRONIC RESOURCESFebruary 2024November 2024Allow910NoNo
18438197METHOD OF CONSORTIUM HASHINGFebruary 2024July 2024Allow610YesNo
18438053Blockchain Index TrackingFebruary 2024May 2025Abandon1510NoNo
18432879AUTOMORPHIC TRANSFORMATIONS OF SIGNAL SAMPLES WITHIN A TRANSMITTER OR RECEIVERFebruary 2024September 2024Allow700NoNo
18431059DISTINGUISHING BETWEEN FUNCTIONAL TRACKING DOMAINS AND NONFUNCTIONAL TRACKING DOMAINS ON A HOST WEB PAGEFebruary 2024August 2024Allow700NoNo
18420897FULLY HOMOMORPHIC ENCRYPTION AND DECRYPTION APPARATUS AND METHOD FOR OPERATING THE SAMEJanuary 2024May 2024Allow400NoNo
18421106SYSTEM, APPARATUS, AND METHOD FOR SECURE EXCHANGE OF PERSONAL INFORMATIONJanuary 2024February 2025Allow1310YesNo
18419136PROVISIONING TRUSTED EXECUTION ENVIRONMENT BASED ON CHAIN OF TRUST INCLUDING PLATFORMJanuary 2024March 2025Allow1410YesNo
18413394COMPUTER-BASED PLATFORMS AND SYSTEMS CONFIGURED TO ENHANCE A CALL SCREEN WITH USER-CONTROLLED NOTES ASSOCIATED WITH THE CALL AND METHODS OF USE THEREOFJanuary 2024March 2025Allow1410NoNo
18411296ENCRYPTED DATA COMMUNICATION AND GATEWAY DEVICE FOR ENCRYPTED DATA COMMUNICATIONJanuary 2024November 2024Allow1010NoNo
18408969Authentication of Networked Devices Having Low Computational CapacityJanuary 2024November 2024Allow1010NoNo
18403402METHOD TO IMPROVE ANTI-MALWARE SCAN RESPONSIVENESS AND EFFECTIVENESS USING USER SYMPTOMS FEEDBACKJanuary 2024December 2024Allow1210NoNo
18402484METHODS AND SYSTEMS FOR INTRODUCING SELF-CONTAINED INTENT FUNCTIONALITY INTO DECENTRALIZED COMPUTER NETWORKSJanuary 2024March 2025Abandon1410NoNo
18398899CALCULATING A TRUST SCOREDecember 2023March 2025Allow1410NoNo
18397179SYSTEMS AND METHODS THAT PERFORM FILTERING, LINKING, AND RENDERINGDecember 2023September 2024Allow810NoNo
18397581PSEUDORANDOM OBJECT PLACEMENT IN HIGHER DIMENSIONS IN AN AUGMENTED OR VIRTUAL ENVIRONMENTDecember 2023August 2024Allow800NoNo
18543897SUPERVISED LEARNING SYSTEM FOR IDENTITY COMPROMISE RISK COMPUTATIONDecember 2023November 2024Allow1110YesNo
18541533Providing a Cryptographic InformationDecember 2023November 2024Allow1110NoNo
18536591METHOD OF CONSORTIUM HASHINGDecember 2023July 2024Abandon710NoNo
18537681DATA AGGREGATION SYSTEM FOR ENABLING QUERY OPERATIONS ON RESTRICTED DATA THAT ORIGINATES FROM MULTIPLE INDEPENDENT MULTIPLE SOURCESDecember 2023November 2024Allow1110NoNo
18523602SYSTEMS AND METHODS FOR LINKING SECURITY ACCOUNTS TO APPLICATION ACCOUNTS AND CONVERGING MULTIPLE IDENTITY SYSTEMSNovember 2023June 2025Allow1800YesNo
18521187METHOD AND APPARATUS WITH HOMOMORPHIC ENCRYPTIONNovember 2023October 2024Allow1110NoNo
18564535Information Verification Method and ApparatusNovember 2023June 2025Allow1900NoNo
18514932SYSTEM FOR PROCESSING CONTENT IN SCAN AND REMEDIATION PROCESSINGNovember 2023January 2025Allow1410NoNo
18514199Protections Against Command Line Security VulnerabilitiesNovember 2023January 2024Allow200NoNo
18510254Fully Homomorphic Encryption Transpiler for High-level LanguagesNovember 2023June 2024Allow700NoNo
18503798METHODS FOR SERVICE SLICE SELECTION AND SEPARATIONNovember 2023September 2024Allow1010NoNo
18499133POINTER BASED DATA ENCRYPTIONOctober 2023February 2025Allow1610YesNo
18376882Method And System For Log Data Analytics Based On SuperMinHash SignaturesOctober 2023July 2024Allow1010NoNo
18479981SYSTEMS AND METHODS FOR MANAGING DATA STORAGE CLUSTER SYNCHRONIZATIONOctober 2023May 2025Allow1900NoNo
18375925DEPLOYING FIREWALL FOR VIRTUAL NETWORK DEFINED OVER PUBLIC CLOUD INFRASTRUCTUREOctober 2023May 2025Abandon2020YesNo
18478704MULTI-LINK WIRELESS COMMUNICATION SECURITYSeptember 2023June 2025Allow2120NoNo
18284755DISTRIBUTING DIGITAL COMPONENTS WHILE SECURING USER DATASeptember 2023April 2025Allow1900NoNo
18475821NETWORK SECURITY TECHNIQUES COMPARING OBSERVED DISTRIBUTIONS TO BASELINE DISTRIBUTIONSSeptember 2023September 2024Allow1210YesNo
18370484Cyberanalysis Workflow AccelerationSeptember 2023February 2024Allow510NoNo
18467015FILE ACCESS METHOD, COMMUNICATION SYSTEM, AND ELECTRONIC DEVICESeptember 2023June 2025Allow2100NoNo
18244599SENSITIVE STORED PROCEDURE IDENTIFICATION IN REAL-TIME AND WITHOUT DATA EXPOSURESeptember 2023June 2025Allow2100NoNo
18244795PROCESSOR THAT PREVENTS SPECULATIVE EXECUTION ACROSS TRANSLATION CONTEXT CHANGE BOUNDARIES TO MITIGATE SIDE CHANNEL ATTACKSSeptember 2023June 2024Allow1000NoNo
18240680System and Method for Validating a Digital Item Token on a Simulated User DeviceAugust 2023May 2025Allow2020YesNo
18241016MULTIFACTOR IDENTITY AUTHENTICATION VIA CUMULATIVE DYNAMIC CONTEXTUAL IDENTITYAugust 2023April 2024Allow700YesNo
18239774CRYPTO-SIGNED SWITCHING BETWEEN TWO-WAY TRUSTED NETWORK DEVICES IN A SECURE PEER-TO-PEER DATA NETWORKAugust 2023June 2024Allow1010NoNo
18237224METHOD FOR ADAPTIVE CONTROL SCHEMES FOR SURGICAL NETWORK CONTROL AND INTERACTIONAugust 2023January 2025Allow1700NoNo
18236587POST-QUANTUM CONSTANT-TIME KEY ROTATION VERIFICATIONAugust 2023April 2025Allow2000YesNo
18448862MEMORY DEVICE WITH CRYPTOGRAPHIC KILL SWITCHAugust 2023February 2025Allow1820NoNo
18363607Cybersecurity DetectionAugust 2023April 2025Allow2000NoNo
18228886ELLIPTIC CURVE CRYPTOGRAPHY MASKED BLINDING COUNTERMEASUREAugust 2023July 2025Allow2310YesNo
18361706AUTHENTICATED HEALTH CREDENTIAL ACCESS METHODS AND APPARATUSJuly 2023June 2025Allow2300NoNo
18227760Digital Forge Systems and MethodsJuly 2023April 2025Allow2100NoNo
18227368MANAGING INFORMATION FOR MODEL TRAINING USING DISTRIBUTED BLOCKCHAIN LEDGERJuly 2023June 2024Allow1110NoNo
18356897Certificate Validation Using a Multiple-Key-Pair Root Certificate AuthorityJuly 2023May 2025Allow2200NoNo
18353563Trusted Sender Signature Messaging SystemJuly 2023November 2023Allow410YesNo
18352504RELAY-ATTACK RESISTANT COMMUNICATIONSJuly 2023July 2024Allow1210NoNo
18351626SYSTEMS AND METHODS FOR MONITORING AND SECURING NETWORKS USING A SHARED BUFFERJuly 2023March 2025Abandon2010NoNo
18221790GENERATING A SHARED SECRET FOR AN ELECTRONIC SYSTEMJuly 2023April 2025Allow2100NoNo
18352030ENCRYPTION PROCESSING DEVICE AND ENCRYPTION PROCESSING METHODJuly 2023March 2025Allow2000NoNo
18221665PRIVATE DECISION TREE EVALUATION USING AN ARITHMETIC CIRCUITJuly 2023April 2024Allow910YesNo
18350451Hybrid Content Protection Architecture for EmailJuly 2023May 2025Allow2200NoNo
18349969PROGRAM OPERATION SEQUENCE DETERMINATION FOR REDUCED POTENTIAL LEAKAGE OF PERSONALLY IDENTIFIABLE INFORMATIONJuly 2023May 2025Allow2300NoNo
18342673APPARATUS, SYSTEM, AND METHOD FOR MULTI-BITRATE CONTENT STREAMINGJune 2023February 2025Allow1910NoNo
18214814DOMAIN ADAPTATION-BASED DISGUISING OF PROMPTS FOR DATA PRIVACY IN FOUNDATION MODELSJune 2023March 2025Allow2100NoNo
18340132SYSTEMS AND METHODS FOR SECURELY MANAGING BROWSER PLUGINS VIA EMBEDDED BROWSERJune 2023March 2025Allow2100NoNo
18338258METHOD AND SYSTEM FOR RUNTIME INTEGRITY CHECKJune 2023October 2023Allow401YesNo
18337795PROCESSOR TO ACCELERATE AND SECURE HASH-BASED SIGNATURE COMPUTATIONSJune 2023July 2025Allow2411NoNo
18337391CRYPTOSYSTEM WITH UTILIZING SPLIT-RADIX DISCRETE GALOIS TRANSFORMATIONJune 2023April 2025Allow2210NoNo
18210896Efficient Packet Capture for Cyber Threat AnalysisJune 2023March 2025Allow2120YesYes
18268103HOMOMORPHIC ENCRYPTION METHOD AND ASSOCIATED DEVICES AND SYSTEMJune 2023May 2025Allow2300NoNo
18335665SYSTEMS AND METHODS FOR POST-QUANTUM CRYPTOGRAPHY OPTIMIZATIONJune 2023April 2024Allow1000NoNo
18208015INTERLEAVED EXACT-MATCH LOOKUP TABLE FOR MULTIPLE PACKET PROCESSING APPLICATIONS IN A NETWORK DEVICEJune 2023June 2025Allow2400NoNo
18207964MICROPROCESSOR THAT PREVENTS STORE-TO-LOAD FORWARDING BETWEEN DIFFERENT TRANSLATION CONTEXTSJune 2023October 2024Allow1610NoNo
18332529ADAPTIVE VULNERABILITY MANAGEMENT BASED ON DIVERSE VULNERABILITY INFORMATIONJune 2023August 2024Allow1510NoNo
18266248DELIVERING HASH VALUESJune 2023July 2025Allow2510NoNo
18331892APPARATUS FOR PROCESSING HOMOMORPHIC ENCRYPTED MESSAGES AND METHOD THEREOFJune 2023May 2025Allow2310NoNo
18330584ELECTRONIC DEVICE AND SECURE BOOTING METHOD THEREOFJune 2023April 2025Allow2200YesNo
18329118SECURITY FOR POWER SUPPLY UNIT MICROCONTROLLERSJune 2023May 2025Allow2301YesNo
18205839METHOD FOR MANAGING INTELLIGENT TRANSPORT SYSTEM COMMUNICATIONS AND CORRESPONDING ELECTRONIC CONTROL UNITJune 2023June 2025Allow2420NoNo
18328964NETWORK BOUND ENCRYPTION FOR ORCHESTRATING WORKLOADS WITH SENSITIVE DATAJune 2023September 2024Allow1510YesNo
18328567QUANTUMPROOF BLOCKCHAINJune 2023March 2024Allow1000NoNo
18328549QUANTUMPROOF BLOCKCHAINJune 2023July 2024Allow1310NoNo
18204257INTEGRATED SECURITY WORKBENCHMay 2023June 2025Allow2401YesNo
18326937TECHNIQUES FOR REDUCING SECURITY RISKS ASSOCIATED WITH SHARED STORAGEMay 2023March 2025Allow2200NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2491.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
281
Examiner Affirmed
208
(74.0%)
Examiner Reversed
73
(26.0%)
Reversal Percentile
18.0%
Lower than average

What This Means

With a 26.0% reversal rate, the PTAB affirms the examiner's rejections in the vast majority of cases. This reversal rate is in the bottom 25% across the USPTO, indicating that appeals face significant challenges here.

Strategic Value of Filing an Appeal

Total Appeal Filings
684
Allowed After Appeal Filing
199
(29.1%)
Not Allowed After Appeal Filing
485
(70.9%)
Filing Benefit Percentile
29.1%
Lower than average

Understanding Appeal Filing Strategy

Filing a Notice of Appeal can sometimes lead to allowance even before the appeal is fully briefed or decided by the PTAB. This occurs when the examiner or their supervisor reconsiders the rejection during the mandatory appeal conference (MPEP § 1207.01) after the appeal is filed.

In this dataset, 29.1% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is below the USPTO average, suggesting that filing an appeal has limited effectiveness in prompting favorable reconsideration.

Strategic Recommendations

⚠ Appeals to PTAB face challenges. Ensure your case has strong merit before committing to full Board review.

⚠ Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Art Unit 2491 - Prosecution Statistics Summary

Executive Summary

Art Unit 2491 is part of Group 2490 in Technology Center 2400. This art unit has examined 7,072 patent applications in our dataset, with an overall allowance rate of 74.9%. Applications typically reach final disposition in approximately 32 months.

Comparative Analysis

Art Unit 2491's allowance rate of 74.9% places it in the 41% percentile among all USPTO art units. This art unit has a below-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 2491 receive an average of 2.26 office actions before reaching final disposition (in the 82% percentile). The median prosecution time is 32 months (in the 34% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more challenging examination environment compared to the USPTO average.
  • With more office actions than average, plan for multiple rounds of prosecution.
  • The median prosecution time is longer than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

Important Disclaimer

Not Legal Advice: The information provided in this report is for informational purposes only and does not constitute legal advice. You should consult with a qualified patent attorney or agent for advice specific to your situation.

No Guarantees: We do not provide any guarantees as to the accuracy, completeness, or timeliness of the statistics presented above. Patent prosecution statistics are derived from publicly available USPTO data and are subject to data quality limitations, processing errors, and changes in USPTO practices over time.

Limitation of Liability: Under no circumstances will IronCrow AI be liable for any outcome, decision, or action resulting from your reliance on the statistics, analysis, or recommendations presented in this report. Past prosecution patterns do not guarantee future results.

Use at Your Own Risk: While we strive to provide accurate and useful prosecution statistics, you should independently verify any information that is material to your prosecution strategy and use your professional judgment in all patent prosecution matters.