USPTO Examiner SARKAR ASOK K - Art Unit 2891

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18893967METHOD FOR MANUFACTURING SEMICONDUCTOR STACK STRUCTURE WITH ULTRA THIN DIESeptember 2024April 2025Allow611NoNo
18791575INHERENT AREA SELECTIVE DEPOSITION OF SILICON-CONTAINING DIELECTRIC ON METAL SUBSTRATEAugust 2024April 2025Allow900NoNo
18439018PROCESSING METHOD, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, PROCESSING APPARATUS, AND RECORDING MEDIUMFebruary 2024March 2025Allow1310NoNo
18433472DISPLAY SUBSTRATE AND PREPARATION METHOD THEREOF, AND DISPLAY DEVICEFebruary 2024March 2026Allow2510NoNo
18432778SILICON-ON-INSULATOR SUBSTRATE INCLUDING TRAP-RICH LAYER AND METHODS FOR MAKING THEREOFFebruary 2024August 2025Allow1810YesNo
18416243Integrated Circuitry, A Memory Array Comprising Strings Of Memory Cells, A Method Used In Forming A Conductive Via, A Method Used In Forming A Memory Array Comprising Strings Of Memory CellsJanuary 2024November 2024Allow1000NoNo
18412645MANUFACTURING METHOD FOR SILICON NITRIDE THIN FILM, THIN FILM TRANSISTOR AND DISPLAY PANELJanuary 2024November 2024Allow1000NoNo
18411914LASER-ASSISTED METHOD FOR PARTING CRYSTALLINE MATERIALJanuary 2024August 2025Allow1911NoNo
18410333METHOD OF FORMING AN ELECTRONIC STRUCTURE USING REFORMING GAS, SYSTEM FOR PERFORMING THE METHOD, AND STRUCTURE FORMED USING THE METHODJanuary 2024January 2025Allow1210NoNo
18402971RF SWITCH DEVICE WITH A SIDEWALL SPACER HAVING A LOW DIELECTRIC CONSTANTJanuary 2024August 2024Allow800NoNo
18563937SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOFNovember 2023March 2026Allow2800NoNo
18518459SEMICONDUCTOR DEVICENovember 2023March 2026Allow2810NoNo
18563665SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND METHOD FOR MANUFACTURING SEMICONDUCTOR LIGHT-EMITTING ELEMENTNovember 2023March 2026Allow2800NoNo
18514324METHOD OF MANUFACTURING AN ELECTRONIC DEVICE AND ELECTRONIC DEVICE MANUFACTURED THEREBYNovember 2023March 2026Allow2810NoNo
18561734METHOD FOR MANUFACTURING SEMICONDUCTOR STACK STRUCTURE WITH ULTRA THIN DIENovember 2023July 2025Allow2010NoNo
18383976AREA SELECTIVE DEPOSITION OF HARDMASKS FOR VACUUM GAP FORMATIONOctober 2023January 2026Allow2700NoNo
18494450METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING METHOD, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMOctober 2023August 2025Allow2210NoNo
18287538LIGHT-EMITTING ELEMENT, QUANTUM DOT SOLUTION, AND METHOD FOR MANUFACTURING LIGHT-EMITTING ELEMENTOctober 2023January 2026Allow2700NoNo
18549757METHOD AND SYSTEM FOR TREATING A STACK INTENDED FOR THE MANUFACTURE OF A HETEROJUNCTION PHOTOVOLTAIC CELLOctober 2023February 2026Allow3000NoNo
18374832METHODS FOR DEPOSITING GAP FILLING FLUIDS AND RELATED SYSTEMS AND DEVICESSeptember 2023January 2025Allow1610NoNo
18464993METHOD FOR FILLING GAPSeptember 2023January 2026Allow2800NoNo
18461976METHOD OF DEPOSITING ATOMIC LAYERSeptember 2023December 2025Allow2700NoNo
18458486METHOD OF PROCESSING SUBSTRATE, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMAugust 2023April 2025Allow2010NoNo
18232313Deposition of Thick Layers of Silicon DioxideAugust 2023November 2025Allow2700YesNo
18229544CONCURRENT OR CYCLICAL ETCH AND DIRECTIONAL DEPOSITIONAugust 2023October 2025Allow2600NoNo
18227016METHOD OF FORMING TREATED SILICON-CARBON MATERIALJuly 2023November 2025Allow2700NoNo
18357300METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMJuly 2023December 2024Allow1610NoNo
18223543HIGH ELECTRON MOBILITY TRANSISTOR AND METHOD FOR FABRICATING THE SAMEJuly 2023June 2024Allow1110NoNo
18349930SYSTEMS AND METHODS FOR ANALYZING DEFECTS IN CVD FILMSJuly 2023January 2025Allow1810NoNo
18218726METHOD FOR SELECTIVE DEPOSITION OF SILICON NITRIDE AND STRUCTURE INCLUDING SELECTIVELY-DEPOSITED SILICON NITRIDE LAYERJuly 2023September 2025Allow2700YesNo
18344181METHOD OF PROCESSING SUBSTRATE, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMJune 2023March 2026Allow3210NoNo
18342296METHOD OF USING DUAL FREQUENCY RF POWER IN A PROCESS CHAMBERJune 2023July 2024Allow1200NoNo
18342048TOPOLOGY SELECTIVE AND SACRIFICIAL SILICON NITRIDE LAYER FOR GENERATING SPACERS FOR A SEMICONDUCTOR DEVICE DRAINJune 2023November 2024Allow1710NoNo
18210522DOPED SILICON OXIDE FOR BOTTOM-UP DEPOSITIONJune 2023March 2026Allow3310NoNo
18209583SILICON COMPOUND AND METHOD OF MANUFACTURING INTEGRATED CIRCUIT DEVICE USING THE SAMEJune 2023February 2026Allow3210YesNo
18334058METHODS AND SYSTEMS FOR FORMING A LAYER COMPRISING SILICON OXIDEJune 2023February 2026Allow3210YesNo
18254477SELECTIVE PLASMA ENHANCED ATOMIC LAYER DEPOSITIONMay 2023September 2025Allow2700NoNo
18201453METHOD FOR INCREASING BRIDGING PROCESS WINDOW OF CONTACT HOLE AND GATE OF DEVICEMay 2023August 2025Allow2700NoNo
18197552METHODS FOR FORMING LOW-K DIELECTRIC MATERIALS WITH INCREASED ETCH SELECTIVITYMay 2023February 2026Allow3310YesNo
18314885System and Method for Semiconductor StructureMay 2023September 2025Allow2901NoNo
18195196NITROGEN-RICH SILICON NITRIDE FILMS FOR THIN FILM TRANSISTORSMay 2023June 2024Allow1310NoNo
18249831ALKOXYDISILOXANES AND DENSE ORGANOSILICA FILMS MADE THEREFROMApril 2023February 2026Allow3410NoNo
18032264FILM FORMING METHOD AND FILM FORMING APPARATUSApril 2023December 2025Allow3210NoNo
18134802CHALCOGEN PRECURSORS FOR DEPOSITION OF SILICON NITRIDEApril 2023August 2024Allow1620NoNo
18132547SUBSTRATE PROCESSING METHODApril 2023February 2026Allow3410NoNo
18194722FILM FORMING METHODApril 2023July 2025Allow2800NoNo
18192563METHODS FOR DEPOSITING DIELECTRIC FILMS WITH INCREASED STABILITYMarch 2023December 2025Allow3310YesNo
18127213INTEGRATED METHOD AND TOOL FOR HIGH QUALITY SELECTIVE SILICON NITRIDE DEPOSITIONMarch 2023December 2025Allow3310NoNo
18125509PEALD Nitride FilmsMarch 2023August 2024Allow1710NoNo
18185205METHOD OF LINEARIZED FILM OXIDATION GROWTHMarch 2023November 2024Allow2010NoNo
18119347SUBSTRATES FOR OPTICAL AND ELECTRON MICROSCOPY OF 2D MATERIALSMarch 2023June 2025Allow2700NoNo
18179293METHOD OF PROCESSING SUBSTRATE, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMMarch 2023May 2023Allow300NoNo
18176692METHOD OF DEPOSITING ATOMIC LAYER AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICEMarch 2023July 2025Allow2800NoNo
18041726METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICEFebruary 2023October 2025Allow3210NoNo
18109365ELECTRONIC DEVICE FABRICATION USING AREA-SELECTIVE DEPOSITIONFebruary 2023June 2025Allow2800NoNo
18161689SEMICONDUCTOR SUBSTRATE AND METHOD FOR PRODUCING SAMEJanuary 2023March 2026Abandon3811NoNo
18007318FILM FORMING METHOD AND FILM FORMING APPARATUSJanuary 2023October 2025Allow3310NoNo
18103370SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING THEREOFJanuary 2023February 2026Allow3611YesNo
18007145METHOD FOR TRANSFERRING A THIN LAYER ONTO A SUPPORT SUBSTRATE PROVIDED WITH A CHARGE-TRAPPING LAYERJanuary 2023September 2025Allow3210YesNo
18156142SELECTIVE INHIBITION FOR SELECTIVE METAL DEPOSITIONJanuary 2023November 2025Allow3410NoNo
18155507Cyclic Low Temperature Film Growth ProcessesJanuary 2023August 2024Allow1910NoNo
18150408ANTIFERROELECTRIC NON-VOLATILE MEMORYJanuary 2023October 2025Allow3410YesNo
18004362METHOD FOR PRODUCING A DIELECTRIC LAYER ON A STRUCTURE MADE OF MATERIALS III-VJanuary 2023February 2026Allow3820NoNo
18088041METHOD OF FORMING LOW-K MATERIAL LAYER WITH HIGH-FREQUENCY POWER, STRUCTURE INCLUDING THE LAYER, AND SYSTEM FOR FORMING SAMEDecember 2022October 2025Allow3310YesNo
18003133IMPURITY REDUCTION IN SILICON-CONTAINING FILMSDecember 2022May 2025Allow2800NoNo
18003145REDUCING INTRALEVEL CAPACITANCE IN SEMICONDUCTOR DEVICESDecember 2022May 2025Allow2800NoNo
18087257METHOD OF PROCESSING SUBSTRATE, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, RECORDING MEDIUM, AND SUBSTRATE PROCESSING APPARATUSDecember 2022September 2025Allow3310NoNo
18002627ADVANCED SELF ALIGNED MULTIPLE PATTERNING USING TIN OXIDEDecember 2022January 2026Allow3610NoNo
18068110Slot Contacts and Method Forming SameDecember 2022February 2024Allow1400NoNo
18079318DEPOSITION OF SILICON NITRIDE WITH ENHANCED SELECTIVITYDecember 2022November 2025Allow3510YesNo
18062518Method of forming thin film, method of forming thin film structure, method of manufacturing capacitor, capacitor and memory device including the sameDecember 2022February 2026Allow3811NoNo
18074849SYSTEMS AND METHODS FOR DEPOSITING LOW-K DIELECTRIC FILMSDecember 2022August 2024Allow2010YesNo
17990867METHODS OF FILLING RECESSES ON SUBSTRATE SURFACES AND FORMING VOIDS THEREINNovember 2022April 2025Allow2900NoNo
17983131METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMNovember 2022January 2024Allow1410NoNo
18053220Integrated Circuit Features with Obtuse Angles and Method of Forming SameNovember 2022May 2024Allow1810NoNo
17977635METHOD OF PROCESSING SUBSTRATE, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, SUBSTRATE PROCESSING APPARATUS, AND RECORDING MEDIUMOctober 2022December 2023Allow1410NoNo
18050142SELECTIVE THERMAL DEPOSITION METHODOctober 2022August 2025Allow3310YesNo
17971265METHOD FOR DEPOSITING A GAP-FILL LAYER BY PLASMA-ASSISTED DEPOSITIONOctober 2022December 2023Allow1410NoNo
17968549VERTICAL TRANSISTOR AND METHOD OF FORMING THE VERTICAL TRANSISTOROctober 2022May 2024Allow1910YesNo
17966110SEMICONDUCTOR DEVICE AND A METHOD FOR FILM DEPOSITIONOctober 2022January 2026Abandon3911NoNo
17963841HIGHLY ETCH SELECTIVE AMORPHOUS CARBON FILMOctober 2022February 2024Allow1610NoNo
17963059HIGHLY ETCH SELECTIVE AMORPHOUS CARBON FILMOctober 2022June 2024Allow2020YesNo
17961224CARBON HARD MASKS FOR PATTERNING APPLICATIONS AND METHODS RELATED THERETOOctober 2022August 2023Allow1010NoNo
17957552BACKSIDE WAFER TREATMENTS TO REDUCE DISTORTIONS AND OVERLAY ERRORS DURING WAFER CHUCKINGSeptember 2022April 2025Allow3000NoNo
17936607SELECTIVE DEPOSITION OF ORGANIC MATERIALSeptember 2022March 2025Allow3000NoNo
17953585MULTIPLE-LAYER METHOD AND SYSTEM FOR FORMING MATERIAL WITHIN A GAPSeptember 2022August 2025Allow3510YesNo
17944583METHOD OF FORMING AN ELECTRONIC STRUCTURE USING REFORMING GAS, SYSTEM FOR PERFORMING THE METHOD, AND STRUCTURE FORMED USING THE METHODSeptember 2022October 2023Allow1310NoNo
17891089Method of DepositionAugust 2022August 2025Allow3610YesNo
17885570HIGH-RESISTANCE RESISTOR BASED ON SILICON CARBIDE AND MANUFACTURING METHOD THEREOFAugust 2022January 2025Allow3000NoNo
17760145FILM FORMATION METHODAugust 2022August 2025Allow3610NoNo
17878443SOURCE-BODY SELF-ALIGNED METHOD OF A VERTICAL DOUBLE DIFFUSED METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTORAugust 2022January 2025Allow3000NoNo
17796552DISPLAY SUBSTRATE, METHOD FOR MANUFACTURING THE DISPLAY SUBSTRATE AND DISPLAY DEVICEJuly 2022March 2025Allow3200NoNo
17815519STRUCTURE FOR FRINGING CAPACITANCE CONTROLJuly 2022October 2023Allow1510NoNo
17873597FORMING FILMS WITH IMPROVED FILM QUALITYJuly 2022January 2025Allow3000NoNo
17814565METAL-ORGANIC PULSED LASER DEPOSITION FOR STOICHIOMETRIC COMPLEX OXIDE THIN FILMSJuly 2022May 2023Allow1000NoNo
17794723DISPLAY DEVICE AND METHOD FOR MANUFACTURING SAMEJuly 2022February 2025Allow3100NoNo
17759072UV CURE FOR LOCAL STRESS MODULATIONJuly 2022January 2025Allow3000NoNo
17866730SUBSTRATE PROCESSING METHODJuly 2022July 2025Allow3610NoNo
17867010Methods For Stabilization Of Self-Assembled Monolayers (SAMs) Using Sequentially Pulsed Initiated Chemical Vapor Deposition (spiCVD)July 2022March 2025Allow3210NoNo
17812721METHOD FOR MANUFACTURING SHALLOW TRENCH ISOLATION STRUCTURE, SHALLOW TRENCH ISOLATION STRUCTURE AND SEMICONDUCTOR STRUCTUREJuly 2022April 2025Allow3410NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner SARKAR, ASOK K.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
7
Examiner Affirmed
6
(85.7%)
Examiner Reversed
1
(14.3%)
Reversal Percentile
26.3%
Lower than average

What This Means

With a 14.3% reversal rate, the PTAB affirms the examiner's rejections in the vast majority 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
29
Allowed After Appeal Filing
9
(31.0%)
Not Allowed After Appeal Filing
20
(69.0%)
Filing Benefit Percentile
47.3%
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, 31.0% 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.

Examiner SARKAR, ASOK K - Prosecution Strategy Guide

Executive Summary

Examiner SARKAR, ASOK K works in Art Unit 2891 and has examined 1,742 patent applications in our dataset. With an allowance rate of 90.5%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 19 months.

Allowance Patterns

Examiner SARKAR, ASOK K's allowance rate of 90.5% places them in the 74% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by SARKAR, ASOK K receive 1.10 office actions before reaching final disposition. This places the examiner in the 11% percentile for office actions issued. This examiner issues significantly fewer office actions than most examiners.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by SARKAR, ASOK K is 19 months. This places the examiner in the 95% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a -2.0% benefit to allowance rate for applications examined by SARKAR, ASOK K. This interview benefit is in the 9% percentile among all examiners. Note: Interviews show limited statistical benefit with this examiner compared to others, though they may still be valuable for clarifying issues.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 39.4% of applications are subsequently allowed. This success rate is in the 90% percentile among all examiners. Strategic Insight: RCEs are highly effective with this examiner compared to others. If you receive a final rejection, filing an RCE with substantive amendments or arguments has a strong likelihood of success.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 38.1% of cases where such amendments are filed. This entry rate is in the 58% percentile among all examiners. Strategic Recommendation: This examiner shows above-average receptiveness to after-final amendments. If your amendments clearly overcome the rejections and do not raise new issues, consider filing after-final amendments before resorting to an RCE.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 171.4% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 92% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences are highly effective with this examiner compared to others. Before filing a full appeal brief, strongly consider requesting a PAC. The PAC provides an opportunity for the examiner and supervisory personnel to reconsider the rejection before the case proceeds to the PTAB.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 75.9% of appeals filed. This is in the 67% percentile among all examiners. Of these withdrawals, 59.1% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner shows above-average willingness to reconsider rejections during appeals. The mandatory appeal conference (MPEP § 1207.01) provides an opportunity for reconsideration.

Petition Practice

When applicants file petitions regarding this examiner's actions, 47.3% are granted (fully or in part). This grant rate is in the 42% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 9.2% of allowed cases (in the 92% percentile). Per MPEP § 1302.04, examiner's amendments are used to place applications in condition for allowance when only minor changes are needed. This examiner frequently uses this tool compared to other examiners, indicating a cooperative approach to getting applications allowed. Strategic Insight: If you are close to allowance but minor claim amendments are needed, this examiner may be willing to make an examiner's amendment rather than requiring another round of prosecution.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.9% of allowed cases (in the 60% percentile). This examiner issues Quayle actions more often than average when claims are allowable but formal matters remain (MPEP § 714.14).

Prosecution Strategy Recommendations

Based on the statistical analysis of this examiner's prosecution patterns, here are tailored strategic recommendations:

  • RCEs are effective: This examiner has a high allowance rate after RCE compared to others. If you receive a final rejection and have substantive amendments or arguments, an RCE is likely to be successful.
  • Request pre-appeal conferences: PACs are highly effective with this examiner. Before filing a full appeal brief, request a PAC to potentially resolve issues without full PTAB review.
  • Examiner cooperation: This examiner frequently makes examiner's amendments to place applications in condition for allowance. If you are close to allowance, the examiner may help finalize the claims.

Relevant MPEP Sections for Prosecution Strategy

  • MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
  • MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
  • MPEP § 1002.02(c): Petitionable matters to Technology Center Director
  • MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
  • MPEP § 1207.01: Appeal conferences - mandatory for all appeals
  • MPEP § 1214.07: Reopening prosecution after appeal

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.