USPTO Art Unit 2135 Prosecution Statistics

Art Unit Information

Art Unit: 2135
Group: 2130
Tech Center: 2100
Total Cases: 6,398
Last Active: August 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19154296COMPUTING CORE, ACCELERATOR, COMPUTING METHOD AND APPARATUS, DEVICE, NON-VOLATILE READABLE STORAGE MEDIUM, AND SYSTEMAugust 2025March 2026Allow700NoNo
19274430SYSTEMS AND METHODS FOR DATA SYNCHRONIZATIONJuly 2025October 2025Allow300NoNo
19115990DATA ACCESS METHOD AND DATA ACCESS DEVICEMarch 2025September 2025Allow610YesNo
19115751STORAGE SYSTEM, DATA STORAGE METHOD, DATA READ METHOD, AND STORAGE MEDIUMMarch 2025July 2025Allow310NoNo
19083354MEMORY DEVICE AND METHOD FOR DYNAMICALLY MAPPING ADDRESS THEREOFMarch 2025August 2025Allow510NoNo
19080907MEMORY CONTROL METHOD AND STORAGE DEVICEMarch 2025June 2025Allow300NoNo
19014824SUPPORTING MULTIPLE ACTIVE REGIONS IN MEMORY DEVICESJanuary 2025March 2026Allow1400NoNo
18987844Flushing Cache Lines Involving Persistent MemoryDecember 2024March 2026Allow1410YesNo
18980736GARBAGE COLLECTION FOR FLASH TRANSLATION LAYER TABLESDecember 2024March 2026Allow1500YesNo
18977123MEMORY DEVICES AND METHODS FOR MANAGING USE HISTORYDecember 2024February 2026Allow1400NoNo
18974230STORAGE DEVICE, MEMORY CONTROLLER, NON-VOLATILE MEMORY DEVICE, AND METHOD OF OPERATING MEMORY CONTROLLER FOR CONTROLLING DATA OUTPUT TIMINGDecember 2024February 2026Allow1400NoNo
18961080SYSTEMS, METHODS, AND MEDIA FOR RECOVERING WORKER SHARES FROM READ PRIORITIZATIONNovember 2024March 2026Allow1610NoNo
18944887DETERMINISTIC OPERATION OF STORAGE CLASS MEMORYNovember 2024March 2026Allow1610NoNo
18940870METHOD FOR PERFORMING READ-DISTURBANCE DETECTION OF MEMORY DEVICE WITH AID OF HASHING-BASED ADDRESS MAPPING FOR DATA INTEGRITY CONTROL, AND ASSOCIATED APPARATUSNovember 2024October 2025Allow1100NoNo
18940052DMA DEVICE, OPERATING METHOD THEREOF, AND ELECTRONIC DEVICE INCLUDING DMA DEVICENovember 2024January 2026Allow1500NoNo
18932790NON-VOLATILE MEMORY CONTROLLER AND CONTROL METHOD WITH IMPROVED GARBAGE COLLECTION TECHNOLOGYOctober 2024February 2026Allow1510NoNo
18929332ROW HAMMER TELEMETRYOctober 2024February 2026Allow1510NoNo
18925222TARGETED ENHANCED POST-WRITE READOctober 2024November 2025Allow1300NoNo
18925594EFFECTIVE STORAGE ALLOCATION FOR SEQUENTIALLY-WRITTEN MEMORY DEVICESOctober 2024December 2025Allow1400NoNo
18920424PROTOCOL INCLUDING TIMING CALIBRATION BETWEEN MEMORY REQUEST AND DATA TRANSFEROctober 2024January 2026Allow1510NoNo
18919823INFORMATION PROCESSING APPARATUS AND CONTROL METHODOctober 2024March 2026Allow1720NoNo
18915560DATA INPUT AND OUTPUT METHOD AND SEMICONDUCTOR DEVICE USING THE SAMEOctober 2024January 2026Allow1500NoNo
18915763MEMORY DEVICE INCLUDING CLOCK SIGNAL CORRECTION CIRCUIT, MEMORY SYSTEM, AND OPERATING METHOD OF MEMORY DEVICEOctober 2024March 2026Allow1710YesNo
18912592MEMORY DEVICE AND STORAGE DEVICEOctober 2024November 2025Allow1300NoNo
18912825ADDRESS TRANSLATION PREFETCHING FOR INPUT/OUTPUT DEVICESOctober 2024February 2026Allow1610NoNo
18905484STORAGE DEVICE FOR STORING AUTONOMOUS DRIVING ANALYSIS DATA AND OPERATING METHOD OF THE SAMEOctober 2024February 2026Allow1610YesNo
18904613ARCHITECTURE, SYSTEM AND METHODS THEREOF FOR SECURE COMPUTING USING HARDWARE SECURITY CLASSIFICATIONSOctober 2024January 2026Allow1610YesNo
18895502DATA PADDING DEVICE AND DATA PADDING METHODSeptember 2024January 2026Allow1610NoNo
18893126Methods and Systems for Managing Compressed Data in Disk BlocksSeptember 2024March 2026Allow1710YesNo
18893602CLOUD-BASED AIR-GAPPED DATA STORAGE MANAGEMENT SYSTEMSeptember 2024December 2025Allow1410NoNo
18891506Memory ValidationSeptember 2024October 2025Allow1300NoNo
18892225DEVICE AND METHOD OF SECURE DECRYPTION BY VIRTUALIZATION AND TRANSLATION OF PHYSICAL ENCRYPTION KEYSSeptember 2024January 2026Allow1610NoNo
18885881IMPLEMENTING SPARSE DISTRIBUTED MEMORYSeptember 2024November 2025Allow1400NoNo
18886567MULTI-BANK MEMORY THAT SUPPORTS MULTIPLE READS AND MULTIPLE WRITES PER CYCLESeptember 2024February 2026Allow1710NoNo
18886659NON-VOLATILE MEMORY STORAGE DEVICE CAPABLE OF SELF-REPORTING PERFORMANCE CAPABILITIESSeptember 2024October 2025Allow1300NoNo
18829536DATA COMPRESSION DEVICE, DATA DECOMPRESSION DEVICE, AND MEMORY SYSTEMSeptember 2024March 2026Allow1801NoNo
18827981STRUCTURES AND METHODS FOR ACCURATE SEGMENTING OF BAD BLOCKS OF NON-VOLATILE MEMORYSeptember 2024January 2026Allow1610NoNo
18828004DATA COMPRESSION CIRCUIT, MEMORY SYSTEM AND METHOD FOR CONTROLLING THE DATA COMPRESSION CIRCUITSeptember 2024October 2025Allow1300NoNo
18825264Host and Dual Write Method for Avoiding Data Loss When Writing to an External Data Storage DeviceSeptember 2024October 2025Allow1410YesNo
18823510DISK DEVICE AND RECORDING METHODSeptember 2024December 2025Allow1610NoNo
18822845DYNAMIC MULTI-HOST RESOURCE ALLOCATIONSeptember 2024February 2026Allow1710YesNo
18821618Constructing Virtual Storage Systems From A Variety Of ComponentsAugust 2024December 2025Allow1610NoNo
18821905MEMORY SYSTEMAugust 2024January 2026Allow1710NoNo
18842542STORAGE DEVICE, ELECTRONIC APPARATUS, AND METHOD FOR CONTROLLING STORAGE DEVICEAugust 2024December 2025Allow1610NoNo
18819545MEMORY SUB-SYSTEM INITIATED BURST SCAN UNDER LOW POWER MODEAugust 2024August 2025Allow1100NoNo
18820249Reporting Multiple Events associated with Mitigating Usage-Based DisturbanceAugust 2024March 2026Allow1810YesNo
18817357SYSTEMS AND METHODS FOR MANAGING MEMORY BUFFERS FOR GARBAGE COLLECTION IN NON-VOLATILE STORAGE DEVICESAugust 2024September 2025Allow1300NoNo
18817124SYSTEMS AND METHODS FOR HEAT MAP GENERATION AND OPERATIONAugust 2024January 2026Allow1610NoNo
18816941ERROR CONTROL IN MEMORY SYSTEMS USING COMBINATIONAL CIRCUITSAugust 2024November 2025Allow1510NoNo
18815360Load-Based Data Deletion Optimization in a Storage SystemAugust 2024January 2026Allow1710YesNo
18811955SEMICONDUCTOR MEMORY DEVICES AND MEMORY SYSTEMS INCLUDING THE SAMEAugust 2024September 2025Allow1200NoNo
18811203TEMPERATURE CONTROLLED ZONE CREATION AND ALLOCATIONAugust 2024December 2025Allow1610YesNo
18810487FLASH MEMORY CONTROLLER, OPERATING METHOD OF FLASH MEMORY CONTROLLER, AND STORAGE DEVICE CAPABLE OF PERFORMING DIFFERENT DIMENSION ERROR CORRECTION TO PROTECT DATAAugust 2024October 2025Allow1400NoNo
18809972SOFT DECISION DECODING USING PRELIMINARY DATA IN STORAGE DEVICEAugust 2024January 2026Allow1710YesNo
18810473MEMORY DEVICE CONTROL METHOD AND ASSOCIATED APPARATUS FOR EFFICIENT DECODING IN USING SYNDROME WEIGHTAugust 2024December 2025Allow1610NoNo
18808829STORAGE DEVICE COMMUNICATING WITH EXTERNAL STORAGE DEVICE VIA HOST AND OPERATING METHOD OF THE STORAGE DEVICEAugust 2024November 2025Allow1510YesNo
18808107STORAGE CONTROLLER, DATA READING METHOD AND STORAGE DEVICEAugust 2024March 2026Allow1900NoNo
18806776SOLID STATE STORAGE DEVICE AND PATROL READ METHOD USING WORD LINE GROUPINGS THEREOFAugust 2024December 2025Allow1610NoNo
18807567MEMORY DEVICE, MEMORY SYSTEM, MEMORY CONTROLLER, AND OPERATION METHODAugust 2024November 2025Allow1500NoNo
18802727DIFFERENTIAL APPROACH FOR INDIRECT MEMORY PREFETCHER TRAININGAugust 2024October 2025Allow1400NoNo
18801761THREE-DIMENSIONAL MEMORY AND OPERATING METHOD THEREOFAugust 2024January 2026Allow1800NoNo
18801911COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN MEMORY ACCESS CONTROL PROGRAM, MEMORY ACCESS CONTROL METHOD, AND INFORMATION PROCESSING APPARATUSAugust 2024November 2025Allow1510NoNo
18802707STORAGE CAPACITY TRACKING IN STORAGE SYSTEMSAugust 2024March 2026Allow1910YesNo
18799102STORAGE CONTROLLER FOR NON-VOLATILE MEMORY DEVICE INCLUDING TRIM COMMAND AND MAPPING INVALIDATIONAugust 2024January 2026Allow1710YesNo
18797698MEMORY DEVICES INCLUDING FERROELECTRIC CELL CAPACITORS AND OPERATING METHODS THEREOFAugust 2024March 2026Allow1900NoNo
18836561IDENTIFICATION OF RANDOM-ACCESS PAGES AND MITIGATION OF THEIR IMPACT ON COMPRESSIBLE COMPUTER MEMORIESAugust 2024March 2026Allow1910NoNo
18792881BUFFER ALLOCATION FOR REDUCING BLOCK TRANSIT PENALTYAugust 2024August 2025Allow1310YesNo
18792181MEMORY DEVICE, MEMORY SYSTEM, MEMORY CONTROLLER AND OPERATING METHOD THEREOFAugust 2024March 2026Allow1910YesNo
18789750Cache CoherencyJuly 2024December 2025Allow1610NoNo
18790408MEMORY DIE FAMILY CLASSIFICATION METHODJuly 2024March 2026Allow1910NoNo
18786782MEMORY SYSTEM AND CONTROL METHODJuly 2024August 2025Allow1300NoNo
18785276PERFORMANCE IN A FRAGMENTED MEMORY SYSTEMJuly 2024January 2026Allow1810NoNo
18786416SYSTEMS AND METHODS FOR TIMESTEP SHARED MEMORY MULTIPROCESSING BASED ON TRACKING TABLE MECHANISMSJuly 2024October 2025Allow1510NoNo
18784284OPTIMIZED COMMAND QUEUES WITH LOW LATENCYJuly 2024February 2026Allow1910YesNo
18781803MANAGING CROSS-TEMPERATURE EXPOSURE IN MEMORY SYSTEMSJuly 2024December 2025Allow1710NoNo
18781711MEMORY DEVICE , MEMORY SYTEM, AND OPERATION METHOD THEREOF FOR APPLYING READ VOLTAGES TO WORD LINEJuly 2024October 2025Allow1500NoNo
18779600CXL HDM DECODING SEQUENCING FOR REDUCED AREA AND POWER CONSUMPTIONJuly 2024November 2025Allow1610NoNo
18778592SYSTEMS, METHODS, AND MEDIA FOR IDENTIFYING SEQUENTIAL WORKLOADSJuly 2024March 2026Allow2010NoNo
18775881MEMORY REPAIRSJuly 2024February 2026Allow1910YesNo
18775829SLICE-LEVEL QUORUM VERIFICATION FOR A DISTRIBUTED STORAGE VOLUMEJuly 2024November 2025Allow1610NoNo
18774792STORAGE DEVICE AND OPERATING METHOD THEREOFJuly 2024December 2025Allow1710YesNo
18774803POWER EFFICIENT CODEWORD SCRAMBLING IN A NON-VOLATILE MEMORY DEVICEJuly 2024August 2025Allow1400NoNo
18774439SEQUENTIALIZING DATA OF A MEMORY SYSTEMJuly 2024September 2025Allow1401NoNo
18772430INITIALIZATION INFORMATION STORAGE VIRTUALIZATION SYSTEMJuly 2024January 2026Allow1920YesNo
18771088STACK MEMORY DEVICES CONFIGURED TO COMMUNICATE VIA PACKETSJuly 2024January 2026Allow1910NoNo
18769815MEMORY CONTROLLER, OPERATING METHOD THEREOF, AND STORAGE DEVICE FOR ENSURING INITIALIZATION OF SECURITY PARAMETERJuly 2024October 2025Allow1510YesNo
18766990MEMORY SYSTEM AND INFORMATION PROCESSING SYSTEMJuly 2024January 2026Allow1810YesNo
18766224UNIVERSAL SENSOR ASSEMBLY FOR VEHICLESJuly 2024January 2026Allow1910YesNo
18765206HOTNESS TRACKINGJuly 2024February 2026Allow1910YesNo
18762721DATA REDUCTION MANAGEMENTJuly 2024December 2025Allow1830NoNo
18761657SMART STORAGE DEVICESJuly 2024January 2026Allow1810YesNo
18760055DATA WRITING METHOD, MEMORY STORAGE DEVICE AND MEMORY CONTROL CIRCUIT UNITJuly 2024August 2025Allow1430NoNo
18758207ADDRESS TRANSLATION FOR ACCELERATOR-TRIGGERED MEMORY ACCESS REQUESTJune 2024August 2025Allow1400NoNo
18758165ADDRESS TRANSLATION FOR ACCELERATOR-TRIGGERED MEMORY ACCESS REQUESTSJune 2024July 2025Allow1200NoNo
18757335NEURAL PROCESSING DEVICE AND TRANSACTION TRACKING METHOD THEREOFJune 2024March 2025Allow900YesNo
18753323Peer Configuration of Compute Resources Among Data Storage DevicesJune 2024January 2026Allow1910NoNo
18751855FORCE PROVISIONING VIRTUAL OBJECTS IN DEGRADED STRETCHED CLUSTERSJune 2024June 2025Allow1110YesNo
18752498SYSTEMS, METHODS, AND MEDIA FOR TUNING SOLID-STATE DRIVESJune 2024December 2025Allow1710NoNo
18751250IDENTIFYING WORDLINES SUSCEPTIBLE TO DEEPER ERASE CONDITIONSJune 2024March 2026Allow2110YesNo
18751002EFFICIENT USAGE OF WRITEBOOSTER BUFFER IN PRESERVE USER SPACE MODEJune 2024December 2025Allow1710NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2135.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
168
Examiner Affirmed
115
(68.5%)
Examiner Reversed
53
(31.5%)
Reversal Percentile
46.0%
Lower than average

What This Means

With a 31.5% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is below the USPTO average, indicating that appeals face more challenges here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
454
Allowed After Appeal Filing
156
(34.4%)
Not Allowed After Appeal Filing
298
(65.6%)
Filing Benefit Percentile
60.5%
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, 34.4% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is above the USPTO average, suggesting that filing an appeal can be an effective strategy for prompting 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 is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 2135 - Prosecution Statistics Summary

Executive Summary

Art Unit 2135 is part of Group 2130 in Technology Center 2100. This art unit has examined 6,398 patent applications in our dataset, with an overall allowance rate of 80.2%. Applications typically reach final disposition in approximately 29 months.

Comparative Analysis

Art Unit 2135's allowance rate of 80.2% places it in the 64% 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 2135 receive an average of 2.09 office actions before reaching final disposition (in the 66% percentile). The median prosecution time is 29 months (in the 59% 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.