USPTO Examiner PERSAUD DEORAM - Art Unit 2882

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19219732Lithography Using Spin Isolated Monochromatic Electromagnetic RadiationMay 2025November 2025Allow510NoNo
18851601SUBSTRATE WARPAGE DETERMINATION SYSTEMSeptember 2024March 2026Allow1700NoNo
18780548ELECTRON PROBE POSITIONING PATTERN, DISPLACEMENT MEASUREMENT METHOD, AND POSITIONING CONTROL METHODJuly 2024December 2025Allow1700NoNo
18673341EXHAUST DISCHARGING DEVICE WITH TEMPERATURE CONTROL AND HEAT RETENTION MECHANISM FOR PREVENTING PHOTORESIST FROM CRYSTALLIZATION AND ADHERING TO PIPES, AND EXHAUST DISCHARGING METHOD USING THE SAMEMay 2024February 2026Allow2000NoNo
18656908OPTICAL SYSTEM, PROJECTION EXPOSURE SYSTEM AND METHODMay 2024February 2026Allow2100NoNo
18653345CHUCK WITH BUFFER PORTIONMay 2024February 2026Allow2100NoNo
18611440DROPLET SPLASH CONTROL FOR EXTREME ULTRAVIOLET PHOTOLITHOGRAPHYMarch 2024June 2025Allow1410NoNo
17767420PHASE MEASUREMENT DEVICE FOR LASER INTERFERENCE PHOTOLITHOGRAPHY SYSTEM, AND METHOD FOR USING SAMEFebruary 2024February 2026Allow4600NoNo
18580176IMPRINTING APPARATUSJanuary 2024October 2025Allow2100NoNo
18578151LITHOGRAPHIC APPARATUS, LOCKING DEVICE, AND METHODJanuary 2024September 2025Allow2000NoNo
18409132SEMICONDUCTOR PROCESSING TOOL AND METHODS OF OPERATIONJanuary 2024May 2025Allow1610NoNo
18403945SUBSTRATE PROCESSING SYSTEM AND SUBSTRATE PROCESSING METHOD, AND DEVICE MANUFACTURING METHODJanuary 2024January 2026Allow2410NoNo
18401729SYSTEM AND METHOD FOR THERMAL MANAGEMENT OF RETICLE IN SEMICONDUCTOR MANUFACTURINGJanuary 2024February 2026Allow2620YesNo
18575358LIGHTING OPTICAL SYSTEM AND EXPOSURE APPARATUSDecember 2023September 2025Allow2110NoNo
18396821MEASUREMENT DEVICE, LITHOGRAPHY SYSTEM AND EXPOSURE APPARATUS, AND CONTROL METHOD, OVERLAY MEASUREMENT METHOD AND DEVICE MANUFACTURING METHODDecember 2023November 2025Allow2310NoNo
18394369SPATIAL LIGHT MODULATION UNIT AND EXPOSURE APPARATUSDecember 2023January 2026Allow2510NoNo
18390910IMPRINT APPARATUS AND PRODUCT MANUFACTURING METHODDecember 2023April 2025Allow1510NoNo
18532977IMAGING VIA ZEROTH ORDER SUPPRESSIONDecember 2023January 2026Allow2630NoNo
18563638METHOD FOR PRODUCING A NANO-STRUCTURED ELEMENT MADE OF HEXAGONAL BORON NITRIDE AND DEVICE COMPRISING SUCH AN ELEMENTNovember 2023November 2025Allow2410NoNo
18516648IMAGING OPTICAL UNITNovember 2023October 2025Allow2310NoNo
18494016EXTREME ULTRAVIOLET LIGHT GENERATION CHAMBER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHODOctober 2023June 2025Allow2000NoNo
18286486A CLEANING METHOD AND ASSOCIATED ILLUMINATION SOURCE METROLOGY APPARATUSOctober 2023September 2025Allow2310NoNo
18281921CLAMP ELECTRODE MODIFICATION FOR IMPROVED OVERLAYSeptember 2023November 2025Allow2610NoNo
18465357OPTICAL SYSTEM FOR A LITHOGRAPHIC PROJECTION EXPOSURE APPARATUSSeptember 2023May 2025Allow2000YesNo
18463667LITHOGRAPHY APPARATUS AND A METHOD OF MANUFACTURING A DEVICESeptember 2023November 2024Allow1420NoNo
18463169EXTREME ULTRAVIOLET LIGHT GENERATION APPARATUS AND ELECTRONIC DEVICE MANUFACTURING METHODSeptember 2023October 2025Allow2510NoNo
18459523WAFER CHUCK INCLUDING SELF-SEALING VACUUM SEAL ASSEMBLIES AND METHODS FOR OPERATING THE SAMESeptember 2023January 2026Allow2910YesNo
18455655EXTREME ULTRAVIOLET (EUV) RADIATION SOURCE APPARATUS, EUV LITHOGRAPHY SYSTEM, AND METHOD FOR GENERATING EXTREME ULTRAVIOLET RADIATIONAugust 2023February 2026Allow2910NoNo
18449779DETECTION DEVICE, DETECTION METHOD, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHODAugust 2023May 2025Allow2110NoNo
18276420ALIGNMENT METHOD AND ASSOCIATED ALIGNMENT AND LITHOGRAPHIC APPARATUSESAugust 2023March 2025Allow1920NoNo
18363602ULTRAVIOLET LASER APPARATUS AND ELECTRONIC DEVICE MANUFACTURING METHODAugust 2023September 2025Allow2610NoNo
18226160WIDTH ADJUSTMENT OF EUV RADIATION BEAMJuly 2023December 2024Allow1720NoNo
18357347SEMICONDUCTOR DEVELOPER TOOL AND METHODS OF OPERATIONJuly 2023October 2024Allow1510NoNo
18347129OVERLAY CORRECTION METHOD, AND EXPOSURE METHOD AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD INCLUDING OVERLAY CORRECTION METHODJuly 2023November 2025Allow2810YesNo
18342377METHOD FOR HEATING AN OPTICAL ELEMENT IN A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS AND OPTICAL SYSTEMJune 2023June 2025Allow2310NoNo
18339761SUBSTRATE TREATING APPARATUSJune 2023June 2025Allow2410YesNo
18211950Rotary Substrate Support for Aligning a SubstrateJune 2023June 2025Allow2410NoNo
18333290METHODS OF GREYTONE IMPRINT LITHOGRAPHY TO FABRICATE OPTICAL DEVICESJune 2023June 2024Allow1210NoNo
18255543INTENSITY ORDER DIFFERENCE BASED METROLOGY SYSTEM, LITHOGRAPHIC APPARATUS, AND METHODS THEREOFJune 2023November 2025Allow2920NoNo
18326354METHOD FOR PERFORMING LITHOGRAPHY PROCESS, LIGHT SOURCE, AND EUV LITHOGRAPHY SYSTEMMay 2023October 2024Allow1720NoNo
18322161SUBSTRATE PROCESSING APPARATUSMay 2023January 2025Allow2000NoNo
18253734METROLOGY APPARATUS BASED ON HIGH HARMONIC GENERATION AND ASSOCIATED METHODMay 2023June 2025Allow2510NoNo
18037957HIGH ACCURACY TEMPERATURE-COMPENSATED PIEZORESISTIVE POSITION SENSING SYSTEMMay 2023February 2026Allow3300NoNo
18317260DETECTION APPARATUS, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHODMay 2023July 2025Allow2610NoNo
18035008METROLOGY METHOD AND ASSOCIATED METROLOGY AND LITHOGRAPHIC APPARATUSESMay 2023September 2024Allow1700NoNo
18308700RETICLE CLEANING DEVICE AND METHOD OF USEApril 2023September 2024Allow1620YesNo
18306995LITHOGRAPHY SYSTEM AND METHOD OF DETECTING FLUID LEAKAGE IN LIQUID STORAGE TANK OF THE SAMEApril 2023January 2025Allow2000NoNo
18138383METHOD FOR DETERMINING STOCHASTIC VARIATION ASSOCIATED WITH DESIRED PATTERNApril 2023May 2024Allow1310NoNo
18304778PLASMA POSITION CONTROL FOR EXTREME ULTRAVIOLET LITHOGRAPHY LIGHT SOURCESApril 2023June 2024Allow1410NoNo
18136789EUV PELLICLE WITH STRUCTURED VENTILATION FRAMEApril 2023January 2026Allow3341YesNo
18300094LITHOGRAPHIC APPARATUS AND METHODApril 2023September 2024Allow1720NoNo
18129169METHOD FOR ADJUSTING A TARGET FEATURE IN A MODEL OF A PATTERNING PROCESS BASED ON LOCAL ELECTRIC FIELDSMarch 2023September 2024Allow1720NoNo
18189564Device and Method for Positioning a Shadow MaskMarch 2023October 2024Allow1910NoNo
18026803EXTREME ULTRAVIOLET LIGHT SOURCE DEVICE AND PROTECTION METHOD FOR RECEIVING PLATE MEMBERMarch 2023March 2025Allow2410NoNo
18122655COMPUTATIONAL METROLOGY BASED SAMPLING SCHEMEMarch 2023March 2024Allow1210NoNo
18026115METROLOGY TOOL WITH POSITION CONTROL OF PROJECTION SYSTEMMarch 2023April 2025Allow2510NoNo
18120520MASK ORIENTATIONMarch 2023January 2024Allow1020NoNo
18180504LASER APPARATUS AND METHOD FOR MANUFACTURING ELECTRONIC DEVICESMarch 2023September 2025Allow3100NoNo
18118695DETERMINING PATTERN RANKING BASED ON MEASUREMENT FEEDBACK FROM PRINTED SUBSTRATEMarch 2023March 2024Allow1310NoNo
18177088LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHODMarch 2023January 2025Allow2200NoNo
18172212SYSTEMS, DEVICES, AND METHODS FOR GENERATING DROP PATTERNSFebruary 2023December 2024Allow2200NoNo
18170928FIELD FACET FOR A FIELD FACET MIRROR OF A PROJECTION EXPOSURE SYSTEMFebruary 2023April 2025Allow2610NoNo
18110746SCANNING OVERLAY METROLOGY WITH HIGH SIGNAL TO NOISE RATIOFebruary 2023October 2024Allow2000NoNo
18167611LINE NARROWING MODULE, GAS LASER APPARATUS, AND METHOD FOR MANUFACTURING ELECTRONIC DEVICESFebruary 2023November 2024Allow2200NoNo
18107518LITHOGRAPHY FILM STACK AND LITHOGRAPHY METHODFebruary 2023November 2024Allow2100NoNo
18165288ELECTRONIC DEVICE MANUFACTURING METHODFebruary 2023June 2025Allow2800NoNo
18165063EXTREME ULTRAVIOLET LIGHT GENERATION SYSTEM AND ELECTRONIC DEVICE MANUFACTURING METHODFebruary 2023December 2025Abandon3420YesNo
18163689LINE NARROWING GAS LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHODFebruary 2023September 2024Allow2000NoNo
18016226A METHOD AND APPARATUS FOR CALCULATING A SPATIAL MAP ASSOCIATED WITH A COMPONENTJanuary 2023March 2025Allow2610NoNo
18016225SPECTROMETRIC METROLOGY SYSTEMS BASED ON MULTIMODE INTERFERENCE AND LITHOGRAPHIC APPARATUSJanuary 2023July 2024Allow1800NoNo
18090873SUBSTRATE SUPPORT, LITHOGRAPHIC APPARATUS AND LOADING METHODDecember 2022March 2024Allow1420NoNo
18089940WAVEFRONT OPTIMIZATION FOR TUNING SCANNER BASED ON PERFORMANCE MATCHINGDecember 2022January 2024Allow1210NoNo
18068674OPTICAL SYSTEM WITH AN APERTURE STOPDecember 2022June 2024Allow1810YesNo
18066411Mask CleaningDecember 2022October 2023Allow1010NoNo
18066771CLEANING METHOD AND APPARATUSDecember 2022October 2023Allow1010NoNo
18010637METHOD FOR THERMO-MECHANICAL CONTROL OF A HEAT SENSITIVE ELEMENT AND DEVICE FOR USE IN A LITHOGRAPHIC PRODUCTION PROCESSDecember 2022April 2025Allow2820NoNo
18082178IMPRINT METHOD, IMPRINT APPARATUS, AND ARTICLE MANUFACTURING METHODDecember 2022August 2024Allow2010YesNo
18062080MEASUREMENT APPARATUS, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHODDecember 2022April 2025Allow2810NoNo
18062117MOTION CONTROL APPARATUS, LITHOGRAPHY APPARATUS, PLANARIZATION APPARATUS, PROCESSING APPARATUS, AND ARTICLE MANUFACTURING METHODDecember 2022September 2024Allow2120YesNo
17927866ABERRATION IMPACT SYSTEMS, MODELS, AND MANUFACTURING PROCESSESNovember 2022September 2024Allow2210NoNo
17992034METROLOGY SYSTEM FOR EXAMINING OBJECTS WITH EUV MEASUREMENT LIGHTNovember 2022June 2023Allow700NoNo
17923913A SUBSTRATE COMPRISING A TARGET ARRANGEMENT, AND ASSOCIATED AT LEAST ONE PATTERNING DEVICE, LITHOGRAPHIC METHOD AND METROLOGY METHODNovember 2022November 2024Allow2420YesNo
17983070DAMPING ARRANGEMENT FOR VIBRATION DAMPING OF AN ELEMENT IN AN OPTICAL SYSTEMNovember 2022March 2025Allow2810NoNo
18048748GRAY TONE UNIFORMITY CONTROL OVER SUBSTRATE TOPOGRAPHYOctober 2022June 2024Allow2000NoNo
17961575OVERLAY TARGET AND OVERLAY METHODOctober 2022July 2025Allow3420NoNo
17960414FACET ASSEMBLY FOR A FACET MIRROROctober 2022March 2025Allow2920NoNo
17995355PRE-EXPOSURE PHOTORESIST CURING TO ENHANCE EUV LITHOGRAPHIC PERFORMANCEOctober 2022April 2025Allow3010NoNo
17916746METHOD OF DETERMINING A SAMPLING SCHEME, ASSOCIATED APPARATUS AND COMPUTER PROGRAMOctober 2022January 2026Allow4010NoNo
17953751METHOD FOR CONTROLLING A LITHOGRAPHIC APPARATUS AND ASSOCIATED APPARATUSESSeptember 2022May 2024Allow2020NoNo
17952380METHOD OF OBTAINING ARRAY OF PLURALITY OF SHOT REGIONS ON SUBSTRATE, EXPOSURE METHOD, EXPOSURE APPARATUS, METHOD OF MANUFACTURING ARTICLE, NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM, AND INFORMATION PROCESSING APPARATUSSeptember 2022January 2024Allow1510YesNo
17952119FLUID HANDLING STRUCTURE FOR LITHOGRAPHIC APPARATUSSeptember 2022September 2023Allow1220NoNo
17912996CONDUIT SYSTEM, RADIATION SOURCE, LITHOGRAPHIC APPARATUS, AND METHODS THEREOFSeptember 2022February 2025Allow2910NoNo
17910454METHOD FOR DETERMINING AN INSPECTION STRATEGY FOR A GROUP OF SUBSTRATES IN A SEMICONDUCTOR MANUFACTURING PROCESSSeptember 2022July 2023Allow1010NoNo
17802841OBJECT HOLDER, TOOL AND METHOD OF MANUFACTURING AN OBJECT HOLDERAugust 2022August 2024Allow2420NoNo
17895069HIGH-PERFORMANCE EUV MICROSCOPE DEVICE WITH FREE-FORM ILLUMINATION SYSTEM STRUCTURE HAVING ELLIPTICAL MIRRORAugust 2022March 2025Allow3110NoNo
17801381METHOD FOR CONTROLLING A MANUFACTURING PROCESS AND ASSOCIATED APPARATUSESAugust 2022May 2023Allow900NoNo
17800649METHOD AND APPARATUS FOR FORMING A PATTERNED LAYER OF MATERIALAugust 2022May 2025Allow3330NoNo
17800346METHOD FOR INFERRING A LOCAL UNIFORMITY METRICAugust 2022September 2023Allow1310NoNo
17819060LINE NARROWED GAS LASER APPARATUS, CONTROL METHOD THEREFOR, ELECTRONIC DEVICE MANUFACTURING METHODAugust 2022June 2024Allow2200NoNo
17818916LINE NARROWING DEVICE, ELECTRONIC DEVICE MANUFACTURING METHODAugust 2022June 2024Allow2200NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner PERSAUD, DEORAM.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
14
Examiner Affirmed
11
(78.6%)
Examiner Reversed
3
(21.4%)
Reversal Percentile
34.7%
Lower than average

What This Means

With a 21.4% 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
72
Allowed After Appeal Filing
23
(31.9%)
Not Allowed After Appeal Filing
49
(68.1%)
Filing Benefit Percentile
49.1%
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, 31.9% 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 PERSAUD, DEORAM - Prosecution Strategy Guide

Executive Summary

Examiner PERSAUD, DEORAM works in Art Unit 2882 and has examined 672 patent applications in our dataset. With an allowance rate of 76.2%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 32 months.

Allowance Patterns

Examiner PERSAUD, DEORAM's allowance rate of 76.2% places them in the 42% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by PERSAUD, DEORAM receive 2.20 office actions before reaching final disposition. This places the examiner in the 60% percentile for office actions issued. This examiner issues a slightly above-average number of office actions.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by PERSAUD, DEORAM is 32 months. This places the examiner in the 52% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +13.6% benefit to allowance rate for applications examined by PERSAUD, DEORAM. This interview benefit is in the 51% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 29.9% of applications are subsequently allowed. This success rate is in the 58% percentile among all examiners. Strategic Insight: RCEs show above-average effectiveness with this examiner. Consider whether your amendments or new arguments are strong enough to warrant an RCE versus filing a continuation.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 22.3% of cases where such amendments are filed. This entry rate is in the 29% percentile among all examiners. Strategic Recommendation: This examiner shows below-average receptiveness to after-final amendments. You may need to file an RCE or appeal rather than relying on after-final amendment entry.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 41.9% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 39% percentile among all examiners. Note: Pre-appeal conferences show below-average success with this examiner. Consider whether your arguments are strong enough to warrant a PAC request.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 78.8% of appeals filed. This is in the 71% percentile among all examiners. Of these withdrawals, 59.6% 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, 56.8% are granted (fully or in part). This grant rate is in the 59% percentile among all examiners. Strategic Note: Petitions show above-average success regarding this examiner's actions. Petitionable matters include restriction requirements (MPEP § 1002.02(c)(2)) and various procedural issues.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 1.0% of allowed cases (in the 68% percentile). This examiner makes examiner's amendments more often than average to place applications in condition for allowance (MPEP § 1302.04).

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.0% of allowed cases (in the 33% percentile). This examiner issues Quayle actions less often than average. Allowances may come directly without a separate action for formal matters.

Prosecution Strategy Recommendations

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

    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.