USPTO Examiner KARST DAVID THOMAS - Art Unit 1767

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19178120Lignin Extraction from Lignocellulosic Biomass Using Fruit-Based Natural SolventApril 2025June 2025Allow200NoNo
18857756EPOXY RESIN COMPOSITION AND CURED PRODUCT OF SAMEOctober 2024July 2025Allow810YesNo
18839741METHOD FOR PREPARING LIGNIN ADHESIVE AND PRODUCT THEREOFAugust 2024April 2025Allow811NoNo
18444827METHODS FOR THE CONTINUOUS POLYMERIZATION OF PHOSPHATE COMPOUNDS TO FORM POLYPHOSPHATE COMPOSITIONSFebruary 2024July 2025Allow1710NoNo
18403431SYNTHESIS OF POSITIVELY CHARGED HYDROGELS FOR ANIONIC POLLUTANT REMOVALJanuary 2024July 2024Allow701NoNo
18510150ONE-COMPONENT TOUGHENED EPOXY ADHESIVESNovember 2023January 2026Abandon2610NoNo
18383072EPOXY COMPOUND, COMPOSITION PREPARED THEREFROM, SEMICONDUCTOR DEVICE PREPARED THEREFROM, ELECTRONIC DEVICE PREPARED THEREFROM, ARTICLE PREPARED THEREFROM, AND METHOD OF PREPARING EPOXY COMPOUNDOctober 2023September 2025Allow2320YesNo
18493554POLOXAMER COMPOSITIONS AND METHODS OF MAKING AND USING SAMEOctober 2023September 2025Abandon2310NoNo
18382287EPOXY COMPOUND, COMPOSITION PREPARED THEREFROM, SEMICONDUCTOR DEVICE PREPARED THEREFROM, ELECTRONIC DEVICE PREPARED THEREFROM, ARTICLE PREPARED THEREFROM, AND METHOD OF PREPARING ARTICLEOctober 2023October 2025Allow2420NoNo
18377115LINEAR BLOCK COPOLYMER TOUGHENER WITH ACRYLATE FUNCTIONAL GROUPSOctober 2023September 2024Allow1100NoNo
18374667Low-Viscosity Silane-Terminated Resin for Sealant and Preparation Method ThereofSeptember 2023May 2025Allow2020NoNo
18456661WATER-ADAPTIVE CEMENT SELF-HEALING SYSTEM, PREPARATION METHOD AND APPLICATION THEREOFAugust 2023March 2024Allow711NoNo
18210769PREPREG, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING FIBER-REINFORCED COMPOSITE MATERIALJune 2023March 2025Allow2110NoNo
18335100ECONOMICAL EPOXY RESIN MATERIAL FOR EPOXY ASPHALT WITH LOW-TEMPERATURE RESISTANCE AND HIGH FLEXIBILITY AS WELL AS PREPARATION METHOD THEREOFJune 2023July 2024Allow1311NoNo
18207408EPOXY RESINJune 2023February 2026Allow3241NoNo
18206386PREPREG, METHOD FOR PRODUCING SAME, AND SLIT TAPE PREPREGJune 2023July 2025Allow2621YesYes
18321904METHOD FOR IMPREGNATING REINFORCING FIBRES WITH POLYARYLETHERKETONES AND SEMI-PRODUCTS OBTAINED THEREFROMMay 2023June 2025Allow2520YesNo
18197010LINEAR BLOCK COPOLYMER TOUGHENER WITH ACRYLATE FUNCTIONAL GROUPSMay 2023August 2023Allow420NoNo
18309236STRUCTURAL ADHESIVE COMPOSITIONSApril 2023May 2025Allow2520NoNo
18034352TWO-STAGE EPOXY BONDING OIL, PREPARATION METHOD AND APPLICATION THEREOFApril 2023January 2025Allow2121NoNo
18307770DIE SEALANT FOR CHIP PACKAGING AND PACKAGING STRUCTUREApril 2023December 2024Abandon2030NoNo
18306615PHOTO-POLYMERIZABLE, UNIVERSAL ANTIMICROBIAL COATING TO PRODUCE HIGH-PERFORMING, MULTI-FUNCTIONAL FACE MASKSApril 2023December 2024Allow2001NoNo
18025280EPOXY RESIN CURING AGENT, EPOXY RESIN COMPOSITION, AND USE OF AMINE COMPOSITIONMarch 2023January 2024Allow1111NoNo
18025328EPOXY RESIN CURING AGENT, EPOXY RESIN COMPOSITION, AND USE OF AMINE COMPOSITIONMarch 2023January 2024Allow1111NoNo
18166107Polyphosphazene and moulding compound comprising the polyphosphazeneFebruary 2023February 2026Allow3611NoNo
18019420LINER FOR PRESSURE VESSEL AND HIGH-PRESSURE GAS STORAGE TANKFebruary 2023January 2026Allow3510NoNo
18007335CATIONIC CURING AGENT, METHOD FOR PRODUCING SAME AND CATIONICALLY CURABLE COMPOSITIONJanuary 2023March 2026Allow3711NoNo
18154876FILM AND LAMINATEJanuary 2023January 2026Abandon3610NoNo
18096725CURABLE COMPOSITION AND FIBER REINFORCED COMPOSITE MATERIALJanuary 2023September 2024Allow2110NoNo
18015721POLYMERCAPTAN COMPOUND AND PREPARATION METHOD THEREOF, CURING AGENT, RESIN COMPOSITION AND USE THEREOFJanuary 2023December 2023Allow1100NoNo
18064703PRECURSOR COMPOSITIONS FOR AN INSULATION AND RELATED METHODSDecember 2022September 2025Allow3330NoNo
17920443OXYMETHYLENE COPOLYMER RESIN COMPOSITION AND METHOD FOR PRODUCING SAMEOctober 2022October 2023Allow1221YesNo
17918722RESIN COMPOSITION, SELF-FUSING INSULATED ELECTRIC WIRE AND WIRE BUNDLEOctober 2022December 2025Allow3810NoNo
17995956METHOD AND ARRANGEMENT FOR CONTROLLED PRETREATMENT OF BIOMASSOctober 2022January 2026Allow3910NoNo
17963085PLASTIC COMPOSITIONOctober 2022January 2025Abandon2710NoNo
17906706TALL OIL DERIVED GLYCIDYL ESTERS AND PROCESS OF MAKING THE SAMESeptember 2022December 2025Abandon3910NoNo
17906588CURING AGENT COMPOSITION BASED ON DIAMINOMETHYLCYCLOHEXANE AND 1,3-CYCLOHEXANEBIS(METHYLAMINE) FOR AN EPOXY RESIN COMPOSITION, EPOXY RESIN COMPOSITION, AND MULTI-COMPONENT EPOXY RESIN SYSTEMSeptember 2022June 2023Allow910NoNo
17929781Bio-based Epoxy Coating Compositions and Methods of Preparation ThereofSeptember 2022January 2025Allow2810YesNo
17901677DYNAMICALLY CROSSLINKABLE POLYMERIC COMPOSITIONS, ARTICLES, AND METHODS THEREOFSeptember 2022January 2025Allow2910NoNo
17907829Millimeter-Wave Radar Housing Material Capable of Being Laser Welded, and Preparation Method ThereforAugust 2022January 2026Allow4011NoNo
17802892NOVEL CO-POLYAMIDESAugust 2022October 2025Abandon3810NoNo
17893939METHOD AND APPARATUS FOR CURING A COMPOSITE ARTICLEAugust 2022November 2024Allow2720NoNo
17884580EPOXY RESIN, PREPARING METHOD THEREOF, EPOXY COMPOSITION COMPRISING THE SAME, AND USE THEREOFAugust 2022March 2025Allow3111NoNo
17759828CURABLE COMPOSITION, CURED PRODUCT, ELECTRONIC DEVICE, DISPLAY DEVICE, OPTICAL MEMBER, POLYMER, PHOTOSENSITIVE COMPOSITION, PATTERN, AND COMPOUNDJuly 2022October 2025Abandon3801NoNo
17875391ISOPOLY-MOLYBDIC ACID COORDINATION POLYMER FOR CATALYZING RING-OPENING POLYMERIZATION OF LACTIDE AND METHOD OF MANUFACTURING THE SAMEJuly 2022May 2025Allow3300NoNo
17872102POLYAMIDE-BASED FILM, METHOD OF PREPARING THE SAME, AND COVER WINDOW AND DISPLAY DEVICE COMPRISING THE SAMEJuly 2022January 2026Allow4211NoNo
17855421SUSTAINABLE APPROACH TO IMPROVE THE TOUGHNESS OF THERMOSET MATERIALS AND COMPOSITESJune 2022February 2025Abandon3120YesNo
17790225ALKYLENE OXIDE POLYMERIZATION USING ALUMINUM COMPOUNDS AND PHOSPHORUS-NITROGEN BASESJune 2022December 2025Allow4220NoNo
17625870Method For Producing Stabilized LigninJune 2022December 2025Allow4711NoNo
17788328Polymerizable Compositions Including a Phthalonitrile Resin and a Polyoxometalate, Articles, and MethodsJune 2022March 2025Allow3300NoNo
17787713SHEET MOLDING COMPOUND RESIN COMPOSITION, SHEET MOLDING COMPOUND, MOLDED ARTICLE, AND METHOD FOR PRODUCING SHEET MOLDING COMPOUNDJune 2022August 2025Abandon3710NoNo
17842062CONTINUOUS PROCESSING OF LIGNIN FOR REDUCED SOLVENT USAGE IN REDUCTIVE CATALYTIC FRACTIONATIONJune 2022December 2025Allow4210NoNo
17786003A method of removing volatile compounds from a lignin-containing material, use of a distillation method, and a lignin-containing materialJune 2022September 2025Allow3910NoNo
17785451EPOXY RESIN SYSTEM HAVING PHASE SEPARATION STRUCTURE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOFJune 2022May 2025Allow3510NoNo
17785591SILYL TERMINATED POLYURETHANES AND INTERMEDIATES FOR THE PREPARATION THEREOFJune 2022October 2025Abandon4001NoNo
17837435EPOXY RESIN SYSTEMSJune 2022August 2024Allow2620NoNo
17783905RESIN COMPOSITION, RESIN-METAL COMPOSITE MEMBER, AND TIREJune 2022January 2026Abandon4320NoNo
17836061METHOD TO SOLUBILIZE BIOMASS UNDER MILD CONDITIONSJune 2022April 2025Allow3400NoNo
17783072THERMOSETTING RESIN COMPOSITION, THERMOSETTING RESIN CURED PRODUCT, PREPREG AND FIBER-REINFORCED COMPOSITE MATERIALJune 2022July 2025Allow3820NoNo
17832490SYNTHESIS OF OLIGOSACCHARIDES AS PREBIOTICS FROM SIMPLE SUGARS AND POLYSACCHARIDES IN CONCENTRATED ACIDSJune 2022December 2025Allow4220NoNo
17781211ALKOXYLATED RESOL-TYPE PHENOL RESIN AND METHOD FOR PRODUCING SAMEMay 2022December 2025Allow4211NoNo
17780995EPOXY RESIN MIXTURE, EPOXY RESIN COMPOSITION AND CURED PRODUCT OF SAMEMay 2022September 2025Allow4020NoNo
17778787POLYMERS, COMPOSITIONS AND METHOD FOR MANUFACTURING AN ARTICLE BY 3D PRINTINGMay 2022September 2025Abandon4001NoNo
17777714POLYETHER KETONE KETONE AND A PROCESS FOR PREPARATION THEREOFMay 2022March 2026Allow4621NoNo
17746727RESIN COMPOSITION AND ARTICLE MADE THEREFROMMay 2022October 2023Allow1710NoNo
17746346FRACTIONATION OF WOODY BIOMASS USING PHENOL-4-SULFONIC ACID (PSA)May 2022August 2025Allow3910NoNo
17745169POLYKETONE POWDER FOR LASER SINTERINGMay 2022July 2025Allow3810YesNo
17776254HYGROSCOPIC HYDROGELS, METHODS AND USES THEREOF FOR WATER COLLECTIONMay 2022September 2025Allow4010NoNo
17775628METHOD FOR FORMING FIBER-REINFORCED COMPOSITE MATERIAL AND EPOXY RESIN COMPOSITION FOR USE THEREINMay 2022March 2026Abandon4621NoNo
17773706EPOXY RESIN COMPOSITION, PREPREG, AND FIBER REINFORCED COMPOSITE MATERIALMay 2022May 2025Allow3610NoNo
17773694EPOXY RESIN COMPOSITION, PREPREG, AND FIBER REINFORCED COMPOSITE MATERIALMay 2022August 2025Allow4020YesNo
17734325RESIN COMPOSITION FOR ENCAPSULATION AND SEMICONDUCTOR DEVICEMay 2022January 2025Abandon3220NoNo
17773141POLYMER RESIN COMPOUND, METHOD FOR PRODUCING SAME, AND PHOTOSENSITIVE RESIN COMPOSITION COMPRISING SAMEApril 2022December 2025Allow4321NoNo
17772574EPOXY RESIN COMPOSITION, PREPREG, AND FIBER REINFORCED COMPOSITE MATERIALApril 2022April 2025Allow3610NoNo
17772975METHODS FOR LIGNIN EXTRACTIONApril 2022February 2026Allow4520NoNo
17731580EPOXY RESIN COMPOSITIONS AND COATING SYSTEMSApril 2022December 2024Allow3230NoNo
17772581EPOXY RESIN COMPOSITION, PREPREG, AND FIBER REINFORCED COMPOSITE MATERIALApril 2022February 2026Allow4540NoNo
17770373TRIAZINE RING-CONTAINING POLYMER AND FILM FORMING COMPOSITION CONTAINING SAMEApril 2022July 2025Allow3910NoNo
17713704PREPREG AND METHOD OF PRODUCING A FIBER-REINFORCED COMPOSITE MATERIALApril 2022May 2025Abandon3831NoNo
17713882HIGH TOUGHNESS ELECTRICALLY CONDUCTIVE PEEK FOR AIRCRAFT FUEL SYSTEMApril 2022July 2024Allow2710NoNo
17708085BPA FREE SPRAYABLE EPOXY RESINMarch 2022September 2024Abandon3020NoNo
17764598A METHOD FOR OBTAINING A LIGNIN OIL COMPOSITION USING A COMPRESSED GAS AND ACID ASSISTED PROCESSMarch 2022June 2025Allow3910NoNo
17697112RESIN COMPOSITION AND ARTICLE MADE THEREFROMMarch 2022September 2023Allow1810NoNo
17686725METHOD AND AN APPARATUS FOR WASHING A CRUDE LIGNIN, A SOLUBLE CARBOHYDRATE CONTAINING FRACTION, A SOLID FRACTION AND THEIR USEMarch 2022March 2026Allow4821YesNo
17687420HEAT-CURABLE CITRACONIMIDE RESIN COMPOSITIONMarch 2022April 2024Allow2520NoNo
17640484POLYIMIDE, VARNISH, AND FILMMarch 2022April 2025Abandon3810NoNo
17685755Vitrimers Containing AdditivesMarch 2022May 2025Allow3831NoNo
17639573POLYMER COMPOSITIONS WITH EXCELLENT ELECTRICAL AND MECHANICAL PROPERTIESMarch 2022May 2025Allow3910NoNo
17639291SILICONE COATINGS WITH IMPROVED PROPERTIESFebruary 2022May 2025Abandon3910NoNo
17679806Melt-Processable Shape-Memory Elastomers Containing Bisurea SegmentsFebruary 2022November 2024Allow3200NoNo
17637084METHOD FOR SEPARATING XYLOSE AND LIGNIN FROM MISCELLANEOUS SUGAR LIQUIDFebruary 2022January 2026Abandon4720NoNo
17651301REHEALABLE AND REWORKABLE POLYMER FOR ELECTRONIC PACKAGINGFebruary 2022December 2023Allow2250YesNo
17670722FORMALDEHYDE-FREE CYCLIC UREA REACTIVE ADDITIVES FOR EXOTHERM SUPPRESSANT COMPOSITIONSFebruary 2022October 2024Allow3240NoNo
17634509IODINE-INFUSED ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENEFebruary 2022March 2026Allow4930NoNo
17590252THERMOSETTING RESIN COMPOSITION, PREPREG, FIBER-REINFORCED PLASTIC MOLDED BODY AND METHOD FOR PRODUCING SAMEFebruary 2022July 2024Abandon2921NoNo
17577111Method of tuning physical properties of thermosetsJanuary 2022May 2024Allow2840YesNo
17572750METHODS FOR PREPARING PHTHALONITRILE COATING COMPOSITIONSJanuary 2022May 2024Allow2920NoNo
17624597Method for Preparation of Acetoacetate Ester CompoundsJanuary 2022March 2025Abandon3801NoNo
17559653METALLIZED POLYMER PARTICLES AND RELATED METHODSDecember 2021March 2026Allow5140NoNo
17621363FILM, LAMINATE, SEMICONDUCTOR WAFER WITH FILM LAYER, SUBSTRATE FOR MOUNTING A SEMICONDUCTOR WITH FILM LAYER, AND SEMICONDUCTOR DEVICEDecember 2021December 2025Allow4811NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner KARST, DAVID THOMAS.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
16
Examiner Affirmed
14
(87.5%)
Examiner Reversed
2
(12.5%)
Reversal Percentile
24.7%
Lower than average

What This Means

With a 12.5% 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
58
Allowed After Appeal Filing
11
(19.0%)
Not Allowed After Appeal Filing
47
(81.0%)
Filing Benefit Percentile
23.5%
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, 19.0% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the bottom 25% across the USPTO, indicating that filing appeals is less effective here than in most other areas.

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 KARST, DAVID THOMAS - Prosecution Strategy Guide

Executive Summary

Examiner KARST, DAVID THOMAS works in Art Unit 1767 and has examined 909 patent applications in our dataset. With an allowance rate of 63.7%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 32 months.

Allowance Patterns

Examiner KARST, DAVID THOMAS's allowance rate of 63.7% places them in the 24% percentile among all USPTO examiners. This examiner is less likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by KARST, DAVID THOMAS receive 2.52 office actions before reaching final disposition. This places the examiner in the 74% 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 KARST, DAVID THOMAS is 32 months. This places the examiner in the 50% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +12.5% benefit to allowance rate for applications examined by KARST, DAVID THOMAS. This interview benefit is in the 49% percentile among all examiners. Recommendation: Interviews provide a below-average benefit with this examiner.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 21.6% of applications are subsequently allowed. This success rate is in the 26% percentile among all examiners. Strategic Insight: RCEs show below-average effectiveness with this examiner. Carefully evaluate whether an RCE or continuation is the better strategy.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 41.1% of cases where such amendments are filed. This entry rate is in the 63% 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, 82.4% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 65% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences show above-average effectiveness with this examiner. If you have strong arguments, a PAC request may result in favorable reconsideration.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 62.8% of appeals filed. This is in the 42% percentile among all examiners. Of these withdrawals, 55.6% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner shows below-average willingness to reconsider rejections during appeals. Be prepared to fully prosecute appeals if filed.

Petition Practice

When applicants file petitions regarding this examiner's actions, 68.1% are granted (fully or in part). This grant rate is in the 75% percentile among all examiners. Strategic Note: Petitions are frequently granted regarding this examiner's actions compared to other examiners. Per MPEP § 1002.02(c), various examiner actions are petitionable to the Technology Center Director, including prematureness of final rejection, refusal to enter amendments, and requirement for information. If you believe an examiner action is improper, consider filing a petition.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 1.0% of allowed cases (in the 67% 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 1.0% of allowed cases (in the 61% 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:

  • Prepare for rigorous examination: With a below-average allowance rate, ensure your application has strong written description and enablement support. Consider filing a continuation if you need to add new matter.

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.