USPTO Art Unit 2139 Prosecution Statistics

Art Unit Information

Art Unit: 2139
Group: 2130
Tech Center: 2100
Total Cases: 4,680
Last Active: June 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19244257VIRTUAL MEMORY CIRCUIT WITH VIRTUAL ADDRESS ENCODINGJune 2025August 2025Allow210NoNo
19244280VIRTUAL MEMORY CIRCUIT FOR SELECTING ADDRESS SPACE AND PAGE TABLEJune 2025August 2025Allow210NoNo
19088950SYSTEM AND METHOD FOR DATA STORAGE, TRANSFER, SYNCHRONIZATION, AND SECURITY USING AUTOMATED MODEL MONITORING AND TRAINING WITH A LOAD-ADAPTIVE CACHEMarch 2025December 2025Allow920NoNo
19060781SYSTEM AND METHOD FOR ASYMMETRIC DATA COMPRESSION USING DUAL CODEBOOKSFebruary 2025October 2025Allow820NoNo
19104166ATOMICITY ASSURANCE IN WRITE THROUGH MODEFebruary 2025March 2026Allow1300YesNo
19015326METHOD AND APPARATUS FOR MEMORY MANAGEMENT IN MEMORY DISAGGREGATION ENVIRONMENTJanuary 2025January 2026Allow1310NoNo
19012535APPARATUSES AND METHODS FOR STAGGERED REFRESH OPERATIONS ACROSS MEMORY DEVICES OF A MODULEJanuary 2025January 2026Allow1300NoNo
18987096CROSS SCENARIO FALL THROUGH (XSFT)December 2024July 2025Allow710NoNo
18980680MEMORY ARCHITECTURE FOR BLOCK MIGRATION IN ZNSDecember 2024March 2026Allow1510NoNo
18972375ELECTRONIC DEVICE AND OPERATING METHOD THEREOFDecember 2024February 2026Allow1401YesNo
18967484METHOD FOR DATA PROCESSING, ELECTRONIC DEVICE, AND STORAGE MEDIUMDecember 2024March 2026Allow1510NoNo
18965539SOLID STATE DRIVE WITH CONCURRENT READ EXECUTION AND ERASE EXECUTIONDecember 2024November 2025Allow1200YesNo
18964040VEHICLE INFORMATION COLLECTION APPARATUS AND VEHICLE INFORMATION COLLECTION SYSTEMNovember 2024February 2026Allow1400YesNo
18960366MEMORY DEVICE AND METHOD FOR MONITORING THE PERFORMANCES OF A MEMORY DEVICENovember 2024January 2026Allow1410NoNo
18868538PROCESSOR-DEPENDENT ADDRESS TRANSLATION FOR HOST MEMORY BUFFERNovember 2024January 2026Allow1300NoNo
18954809NON-DETERMINISTIC MEMORY PROTOCOLNovember 2024March 2026Allow1610NoNo
18941954INITIALIZING MEMORY SYSTEMSNovember 2024January 2026Allow1500YesNo
18940993MEMORY PAGE TABLES SHARING METHOD AND APPARATUSNovember 2024January 2026Allow1400YesNo
18928244SYSTEM AND METHOD FOR SHARING A CACHE LINE BETWEEN NON-CONTIGUOUS MEMORY AREASOctober 2024January 2026Allow1510YesNo
18926027DETECTING MEMORY HAZARDS IN MASSIVELY PARALLEL AND DISTRIBUTED SYSTEMSOctober 2024November 2025Allow1200NoNo
18921891CONTROLLER AND METHODS FOR MANAGING TIMING CHARCTERISTICS USING COLLECTED METRICS AND A TELEMETRY RATIOOctober 2024December 2025Allow1410NoNo
18918693HOST IDENTIFICATION FOR A MEMORY SYSTEMOctober 2024November 2025Allow1300YesNo
18915945DEALLOCATION OF A MEMORY DEVICE WITH A SEGMENTED MAPPING TABLEOctober 2024January 2026Allow1610YesNo
18913556SYSTEM AND METHODS FOR BANDWIDTH-EFFICIENT DATA ENCODINGOctober 2024December 2025Allow1410NoNo
18910922PHYSICAL ADDRESS PROXY (PAP) RESIDENCY DETERMINATION FOR REDUCTION OF PAP REUSEOctober 2024October 2025Allow1210NoNo
18910637STORAGE DEVICE AND METHOD OF OPERATING THE SAME WHERE PARITY DATA OF TARGET LOGICAL PAGE IS STORED IN DIFFERENT PARITY AREASOctober 2024March 2026Allow1710YesNo
18906179STORAGE DEVICE FOR ADAPTIVELY DETERMINING SCHEME OF WRITING DATA UNITS, AND OPERATING METHOD THEREOFOctober 2024February 2026Allow1710YesNo
18904106SYSTEM AND METHOD FOR SECURING HIGH-SPEED INTRACHIP COMMUNICATIONSOctober 2024November 2025Allow1410NoNo
18901853STORAGE SYSTEM AND OPERATING METHOD OF OF MAPPING CONVERSION BASED ON AVERAGE LENGTH OF EXTENTS ALLOCATED TO MAPPING TREESeptember 2024November 2025Allow1300YesNo
18899431STORAGE SYSTEM AND STORAGE CONTROL METHOD OF PERFORMING GARBAGE COLLECTION ON ADDRESS THAT ARE NOT MAPPED IN SNAPSHOT FAMILYSeptember 2024March 2026Allow1710YesNo
18897883MEMORY CONTROLLER FOR SCHEDULING COMMANDS, STORAGE DEVICE INCLUDING MEMORY CONTROLLER, AND OPERATING METHOD OF MEMORY CONTROLLERSeptember 2024March 2026Allow1710YesNo
18894641SYSTEMS AND METHODS FOR UTILIZING MULTI-FACTOR FEEDBACK CONTROL TO ALLOCATE MEMORY RESOURCESSeptember 2024October 2025Allow1200YesNo
18894180STATIC POWER REDUCTION IN CACHES USING DETERMINISTIC NAPSSeptember 2024February 2026Allow1610NoNo
18893737PROGRAMMING-IN-PROCESS FLAG FOR FUSE ELEMENTSSeptember 2024February 2026Allow1610YesNo
18892339HOSTS AND OPERATION METHODS THEREOF, MEMORY SYSTEMS AND OPERATION METHODS THEREOF, AND ELECTRONIC APPARATUSSeptember 2024March 2026Allow1810NoNo
18889766Page Status Management Method and Related DeviceSeptember 2024October 2025Allow1300NoNo
18887886SYNCHRONIZED REQUEST HANDLING AT A MEMORY DEVICESeptember 2024January 2026Allow1610NoNo
18886191VALIDITY MAPPING TECHNIQUESSeptember 2024December 2025Allow1510NoNo
18886679INPUT/OUTPUT OPERATIONS PER SECOND (IOPS) RECOMMENDATION FOR DATA VOLUMESSeptember 2024January 2026Allow1610NoNo
18886862VIRTUALLY-INDEXED CACHE COHERENCY USING PHYSICAL ADDRESS PROXIESSeptember 2024September 2025Allow1210NoNo
18884571STORAGE DEVICE, OPERATING METHOD OF STORAGE DEVICE, AND STORAGE SYSTEM WHERE FAILURE SIGNAL IS GENERATED BASED ON LOGICAL ADDRESS MISMATCHSeptember 2024January 2026Allow1610YesNo
18883268Fabric Data Rate Limiting Proportional to Electrical Current Threshold ViolationsSeptember 2024February 2026Allow1700NoNo
18883823DATA PROCESSING DEVICE AND METHODSeptember 2024January 2026Allow1710YesNo
18830460METHOD OF PERFORMING COPYBACK OPERATION IN NONVOLATILE MEMORY DEVICE, AND NONVOLATILE MEMORY DEVICE AND STORAGE DEVICE PERFORMING THE SAMESeptember 2024September 2025Allow1200NoNo
18829608Command Processing In Sequential Write Required ZoneSeptember 2024February 2026Allow1710YesNo
18829981FILE SYSTEM IMPROVEMENTS FOR ZONED STORAGE DEVICE OPERATIONSSeptember 2024August 2025Allow1100NoNo
18828263VIRTUAL BINNING IN A MEMORY DEVICESeptember 2024March 2026Allow1810YesNo
18844294READ-AS-X PROPERTY FOR PAGE OF MEMORY ADDRESS SPACESeptember 2024January 2026Allow1710YesNo
18823947PHYSICAL ADDRESS PROXY REUSE MANAGEMENTSeptember 2024November 2025Allow1410NoNo
18844012DATA PROCESSING METHOD AND APPARATUS, AND DEVICE TO ADJUST GARABGE COLLECTION THRESHOLDSeptember 2024January 2026Allow1710YesNo
18823133USING A FLAG TO INDICATE WHETHER A MAPPING ENTRY POINTS TO SEQUENTIALLY STORED DATASeptember 2024January 2026Allow1610YesNo
18820819DATA STORAGE DEVICE WITH PRE-ERASE OF METADATA FROM NON-VOLATILE MEMORYAugust 2024December 2025Allow1510YesNo
18819487ENHANCED WORKLOAD MANAGEMENT USING INTERNAL COPY AND/OR ZONE-APPEND TECHNOLOGIESAugust 2024March 2026Allow1810YesNo
18818852ADAPTIVE REPLACEMENT OF SOLID-STATE DISKS WITH VARIABLE WEAR RATESAugust 2024December 2025Allow1510NoNo
18817421HANDLING LOOKUP REQUESTS FOR STORAGE CIRCUITRYAugust 2024January 2026Allow1700NoNo
18818150METHOD TO EFFICIENTLY TRANSFER SUPPORT AND SYSTEM LOGS FROM AIR-GAPPED VAULT SYSTEMS TO REPLICATION DATA SOURCES BY RE-UTILIZING THE EXISTING REPLICATION STREAMSAugust 2024January 2026Allow1710YesNo
18818208METHOD TO EFFICIENTLY TRANSFER SUPPORT AND SYSTEM LOGS FROM AIR-GAPPED VAULT SYSTEMS TO REPLICATION DATA SOURCES BY RE-UTILIZING THE EXISTING REPLICATION STREAMSAugust 2024August 2025Allow1210YesNo
18816595STORAGE DEVICE AND OPERATING METHOD THEREOFAugust 2024November 2025Allow1400YesNo
18817040Pipeline Optimization In Low Power Mode Using PMRAugust 2024August 2025Allow1200NoNo
18814125MEMORY DEVICE FOR PERFORMING IN-MEMORY PROCESSINGAugust 2024November 2025Allow1510NoNo
18814148USAGE DRIVEN MEMORY MAPPINGAugust 2024March 2026Allow1810NoNo
18812256GLOBAL DE-DUPLICATION OF VIRTUAL DISKS IN A STORAGE PLATFORMAugust 2024November 2025Allow1510NoNo
18809646METHODS AND APPARATUS TO BOOT FROM BLOCK DEVICESAugust 2024March 2026Allow1911NoNo
18808491ADDRESS TRANSLATIONAugust 2024December 2025Allow1610YesNo
18807445USER CONFIGURABLE SLC MEMORY SIZEAugust 2024January 2026Allow1710NoNo
18807043Method and Apparatus, Storage Medium, and Computer Program Product of Using Routing Information in Page Table EntryAugust 2024December 2025Allow1610NoNo
18800905MEMORY SYSTEMS, MEMORY CONTROLLERS, CONTROL METHODS, AND STORAGE MEDIUMS TO INCREASE UTILIZATION OF RESOURCES BY MULTIPLE COMMANDSAugust 2024March 2026Allow1910YesNo
18837493SNOOP FILTER SCALABILITYAugust 2024May 2025Allow1000NoNo
18794937INTERCONNECT BASED ADDRESS MAPPING FOR IMPROVED RELIABILITYAugust 2024January 2026Allow1810YesNo
18788456SELECTIVELY DISABLING MEMORY DEVICESJuly 2024January 2026Allow1700NoNo
18789604DETERMINING DATA MIGRATION PRIORITIES IN A MEMORY SUB-SYSTEMJuly 2024January 2026Allow1820NoNo
18787516PAGING METADATA INTO MEMORYJuly 2024March 2026Allow2010NoNo
18786271DCF SUPPORTED TRUSTWORTHY DATA CACHING IN EDGE ENVIRONMENTSJuly 2024November 2025Allow1600NoNo
18783844AUTHENTICATION-BASED AND HARDWARE-BASED LOCKDOWN FEATURES FOR A MEMORY SYSTEMJuly 2024October 2025Allow1500NoNo
18782932MEMORY SYSTEMS, METHODS OF OPERATING THE SAME, AND STORAGE MEDIUMSJuly 2024January 2026Allow1810YesNo
18782147DYNAMIC PAGE MAPPING USING HEADER TO IDENTIFY COMPRESSED DATAJuly 2024December 2025Allow1610NoNo
18780361READ AMPLIFICATION REDUCTION IN A VIRTUAL STORAGE SYSTEM WHEN COMPRESSION IS ENABLED FOR A ZONED CHECKSUM SCHEMEJuly 2024October 2025Allow1510NoNo
18777942Data Storage Device and Method for Using Multiple Models for Predicting a Read ThresholdJuly 2024October 2025Allow1510YesNo
18777905System Control Using Sparse DataJuly 2024February 2026Allow1811NoNo
18778907STORAGE DEVICE CACHE SYSTEM WITH MACHINE LEARNINGJuly 2024October 2025Allow1500NoNo
18778510METHOD AND DEVICE AND STORAGE MEDIUM FOR CONTROLLING READ/WRITE STRATEGY BASED ON FULLNESS DIFFERENCE BETWEEN READ AND WRITE QUEUESJuly 2024November 2025Allow1610YesNo
18776927STORAGE DEVICE SUPPORTING REAL-TIME PROCESSING AND METHOD OF OPERATING THE SAMEJuly 2024November 2025Allow1610YesNo
18775754PREEMPTIVELY WARNING HOST OF BACKGROUND FOLDINGJuly 2024June 2025Allow1100NoNo
18773999SYSTEM AND METHOD FOR CODEBOOK MANAGEMENT BASED ON DATA SOURCE GROUPINGJuly 2024October 2025Allow1510NoNo
18770866MEMORY ALLOCATION FOR MICROCONTROLLER EXECUTIONJuly 2024August 2025Allow1300NoNo
18772045SYSTEMS AND METHODS FOR IDENTIFYING REGIONS OF A MEMORY DEVICEJuly 2024March 2026Allow2010YesNo
18770926BLOCK CACHING WITH QUEUE IDENTIFIERSJuly 2024October 2025Allow1510YesNo
18771436READ DISTURB DETECTION IN A MEMORY SYSTEMJuly 2024February 2026Allow1920NoNo
18771053TECHNIQUES FOR COMPRESSION AND MANAGEMENT OF METADATAJuly 2024November 2025Allow1610YesNo
18769631Profile Guided Memory TrimmingJuly 2024October 2025Allow1510NoNo
18769926REPLAY PROTECTED MEMORY BLOCK DATA FRAMEJuly 2024February 2026Allow1920NoNo
18768696CACHE REPLACEMENT CONTROLJuly 2024December 2025Allow1720NoNo
18767757PERFORMING SNOOP FILTER REPLACEMENT BASED ON HISTORY-AUGMENTED VICTIMIZATION PRIORITY VALUES OF SNOOP FILTER ENTRIES IN PROCESSOR-BASED DEVICESJuly 2024August 2025Allow1300NoNo
18767846RESERVED MEMORY SPACE IN COMPUTATIONAL STORAGE DEVICESJuly 2024February 2026Allow1920YesNo
18766226MEMORY SYSTEMS AND OPERATION METHODS THEREOF AND STORAGE DEVICES AND OPERATION METHODS THEREOFJuly 2024January 2026Allow1810YesNo
18762201ELECTRONIC DEVICES, INCLUDING MEMORY DEVICES, AND OPERATING METHODS THEREOFJuly 2024September 2025Allow1401NoNo
18762089DEVICE AND METHOD FOR IMPLEMENTING LIVE MIGRATIONJuly 2024October 2025Allow1610NoNo
18760409Data Storage Device and Method for Device-Initiated HibernationJuly 2024June 2025Allow1110YesNo
18758297TECHNIQUES FOR PROVIDING DATA CONSISTENCYJune 2024June 2025Allow1200NoNo
18759328Storage Node Configuration Apparatus and Method for Efficient Burst Access HandlingJune 2024February 2026Allow1910NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2139.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
158
Examiner Affirmed
93
(58.9%)
Examiner Reversed
65
(41.1%)
Reversal Percentile
82.9%
Higher than average

What This Means

With a 41.1% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
286
Allowed After Appeal Filing
111
(38.8%)
Not Allowed After Appeal Filing
175
(61.2%)
Filing Benefit Percentile
83.4%
Higher 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, 38.8% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the top 25% across the USPTO, indicating that filing appeals is particularly effective here. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Strategic Recommendations

✓ Appeals to PTAB show good success rates. If you have a strong case on the merits, consider fully prosecuting the appeal to a Board decision.

✓ Filing a Notice of Appeal is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 2139 - Prosecution Statistics Summary

Executive Summary

Art Unit 2139 is part of Group 2130 in Technology Center 2100. This art unit has examined 4,680 patent applications in our dataset, with an overall allowance rate of 81.5%. Applications typically reach final disposition in approximately 25 months.

Comparative Analysis

Art Unit 2139's allowance rate of 81.5% places it in the 69% percentile among all USPTO art units. This art unit has an above-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 2139 receive an average of 1.94 office actions before reaching final disposition (in the 54% percentile). The median prosecution time is 25 months (in the 76% percentile).

Strategic Considerations

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

  • The art unit's allowance rate suggests a more favorable examination environment compared to the USPTO average.
  • With more office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is shorter 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.