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
18857756EPOXY RESIN COMPOSITION AND CURED PRODUCT OF SAMEOctober 2024July 2025Allow810YesNo
18839741METHOD FOR PREPARING LIGNIN ADHESIVE AND PRODUCT THEREOFAugust 2024April 2025Allow811NoNo
18403431SYNTHESIS OF POSITIVELY CHARGED HYDROGELS FOR ANIONIC POLLUTANT REMOVALJanuary 2024July 2024Allow701NoNo
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
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
18096725CURABLE COMPOSITION AND FIBER REINFORCED COMPOSITE MATERIALJanuary 2023September 2024Allow2110NoNo
18015721POLYMERCAPTAN COMPOUND AND PREPARATION METHOD THEREOF, CURING AGENT, RESIN COMPOSITION AND USE THEREOFJanuary 2023December 2023Allow1100NoNo
17920443OXYMETHYLENE COPOLYMER RESIN COMPOSITION AND METHOD FOR PRODUCING SAMEOctober 2022October 2023Allow1221YesNo
17963085PLASTIC COMPOSITIONOctober 2022January 2025Abandon2710NoNo
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
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
17875391ISOPOLY-MOLYBDIC ACID COORDINATION POLYMER FOR CATALYZING RING-OPENING POLYMERIZATION OF LACTIDE AND METHOD OF MANUFACTURING THE SAMEJuly 2022May 2025Allow3300NoNo
17855421SUSTAINABLE APPROACH TO IMPROVE THE TOUGHNESS OF THERMOSET MATERIALS AND COMPOSITESJune 2022February 2025Abandon3120YesNo
17788328Polymerizable Compositions Including a Phthalonitrile Resin and a Polyoxometalate, Articles, and MethodsJune 2022March 2025Allow3300NoNo
17785451EPOXY RESIN SYSTEM HAVING PHASE SEPARATION STRUCTURE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOFJune 2022May 2025Allow3510NoNo
17837435EPOXY RESIN SYSTEMSJune 2022August 2024Allow2620NoNo
17836061METHOD TO SOLUBILIZE BIOMASS UNDER MILD CONDITIONSJune 2022April 2025Allow3400NoNo
17746727RESIN COMPOSITION AND ARTICLE MADE THEREFROMMay 2022October 2023Allow1710NoNo
17773706EPOXY RESIN COMPOSITION, PREPREG, AND FIBER REINFORCED COMPOSITE MATERIALMay 2022May 2025Allow3610NoNo
17734325RESIN COMPOSITION FOR ENCAPSULATION AND SEMICONDUCTOR DEVICEMay 2022January 2025Abandon3220NoNo
17772574EPOXY RESIN COMPOSITION, PREPREG, AND FIBER REINFORCED COMPOSITE MATERIALApril 2022April 2025Allow3610NoNo
17731580EPOXY RESIN COMPOSITIONS AND COATING SYSTEMSApril 2022December 2024Allow3230NoNo
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
17640484POLYIMIDE, VARNISH, AND FILMMarch 2022April 2025Abandon3810NoNo
17687420HEAT-CURABLE CITRACONIMIDE RESIN COMPOSITIONMarch 2022April 2024Allow2520NoNo
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
17651301REHEALABLE AND REWORKABLE POLYMER FOR ELECTRONIC PACKAGINGFebruary 2022December 2023Allow2250YesNo
17670722FORMALDEHYDE-FREE CYCLIC UREA REACTIVE ADDITIVES FOR EXOTHERM SUPPRESSANT COMPOSITIONSFebruary 2022October 2024Allow3240NoNo
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
17557893FILLER, PREPARATION METHOD THEREOF, RESIN COMPOSITION COMPRISING THE FILLER AND ARTICLE MADE THEREFROMDecember 2021August 2023Allow2020NoNo
17557103Epoxy Resin CompositionDecember 2021September 2023Allow2120NoNo
17620688THERMAL CONDUCTIVE SILICONE COMPOSITIONDecember 2021April 2025Allow4020NoNo
17554320TWO-LIQUID-TYPE EPOXY-BASED COATING COMPOSITION AND AEROSOL-TYPE EPOXY-BASED COATING COMPOSITION FOR INITIAL FIRE EXTINCTION USING CAPSULE-TYPE FIRE EXTINGUISHING AGENTDecember 2021January 2025Abandon3710NoNo
175506313D-PRINTED POLYROTAXANE ADDITIVES AND COMPOSITIONSDecember 2021February 2025Allow3841NoNo
17550653SHAPE MEMORY BEHAVIOR OF EPOXY/SLIDING-RING POLYMER COMPOSITESDecember 2021December 2024Allow3621NoNo
17550439HEAT-CURABLE MALEIMIDE RESIN COMPOSITIONDecember 2021July 2024Allow3130YesNo
17549260CYCLIC IMIDE RESIN COMPOSITION, PREPREG, COPPER-CLAD LAMINATE AND PRINTED-WIRING BOARDDecember 2021September 2024Allow3320NoNo
17546294EPOXY COMPOUND, COMPOSITION PREPARED THEREFROM, SEMICONDUCTOR DEVICE PREPARED THEREFROM, ELECTRONIC DEVICE PREPARED THEREFROM, ARTICLE PREPARED THEREFROM, AND METHOD OF PREPARING EPOXY COMPOUNDDecember 2021July 2023Allow1920NoNo
17643144CURABLE LIQUID COMPOSITION, PARTICULATE FILLER, AND COMPOUNDDecember 2021March 2024Allow2710NoNo
17616105PROCESSED LIGNIN AND PROCESS TO PREPARE SUCHDecember 2021August 2024Allow3200NoNo
17526191RESIN COMPOSITION AND ARTICLE MADE THEREFROMNovember 2021May 2024Allow3020NoNo
17516788TRANSPARENT ANTIBACTERIAL PLASTIC FILM AND METHOD FOR MANUFACTURING THE SAMENovember 2021April 2025Allow4120NoNo
17516361LIGNIN DEPOLYMERISATION AND DEOXYGENATION PROCESS FOR OBTAINING AROMATIC COMPOUNDS AND THEIR CATALYTIC REACTION COMPOSITIONNovember 2021May 2025Allow4210NoNo
17512307Liquid Salt Activator and Methods of Making and Using SameOctober 2021January 2025Allow3940YesNo
17507823Germ-repellent Silicone Rubber and Preparation Method and Application thereofOctober 2021December 2023Allow2511NoNo
17598302METHOD FOR PRODUCING ULTRAFINE LIGNIN PARTICLESSeptember 2021May 2025Abandon4411NoNo
17438570PROCESS FOR PRODUCING AGGLOMERATED LIGNIN AND USE THEREOFSeptember 2021July 2024Allow3400NoNo
17434512POLYURETHANE COPOLYMERS AND BLENDS, METHODS OF MANUFACTURE THEREOF AND ARTICLES CONTAINING THE SAMEAugust 2021December 2024Abandon3901NoNo
17404053RESIN COMPOSITION FOR BONDING SEMICONDUCTOR AND ADHESIVE FILM FOR SEMICONDUCTOR USING THE SAMEAugust 2021December 2023Allow2821NoNo
17404480EPOXY COMPOUND, COMPOSITION PREPARED THEREFROM, SEMICONDUCTOR DEVICE PREPARED THEREFROM, ELECTRONIC DEVICE PREPARED THEREFROM, ARTICLE PREPARED THEREFROM, AND METHOD OF PREPARING ARTICLEAugust 2021July 2023Allow2320NoNo
17403941Electromagnetic Curable Novel Toughened Epoxy-Hybrid Structural Adhesives and Applications Using the SameAugust 2021July 2024Allow3530NoNo
17429368Method for lignin purificationAugust 2021September 2024Allow3710NoNo
17393162RESIN COMPOSITIONS AND RESIN INFUSION PROCESSAugust 2021June 2023Abandon2210NoNo
17391902FIRE RESISTANT THERMOPLASTIC-BASED RESIN FOR FIBER-REINFORCED COMPOSITESAugust 2021September 2023Allow2620NoNo
17444117POLYAMIDE COMPOSITIONS AND ARTICLES INCORPORATING THE SAMEJuly 2021July 2023Allow2410NoNo
17388702COMPOSITION FOR HYDROGEL SOLID FREEFORM FABRICATION, METHOD OF FABRICATING HYDROGEL SOLID FREEFORM FABRICATION OBJECT, AND SETJuly 2021September 2024Abandon3830YesNo
17420921Method For Obtaining Low Molecular Weight LigninJuly 2021September 2024Allow3910NoNo
17365403Composite System and Method for Pile Construction and RepairJuly 2021December 2024Abandon4130NoNo
17359513METHOD AND AN APPARATUS FOR FORMING A LIGNIN FRACTION, A LIGNIN COMPOSITION AND ITS USEJune 2021June 2025Allow4710NoNo
17355288LIQUID PROCESSABLE BISMALEIMIDE-TRIAZINE RESINSJune 2021July 2024Abandon3620YesNo
17354729RESIN COMPOSITION, PREPARATION METHOD THEREOF AND ARTICLE MADE THEREFROMJune 2021May 2023Allow2210NoNo
17346897LOW DIELECTRIC RESIN SUBSTRATEJune 2021May 2023Allow2310NoNo
17333284EPOXY RESINMay 2021March 2023Allow2110NoNo
17330407LIGNIN-BASED BLOCK COPOLYMER MOLECULAR-LEVEL COMBINED POLYETHER, PREPARATION METHOD THEREOF, AND APPLICATION IN PREPARING FLEXIBLE POLYURETHANE FOAM MATERIALMay 2021February 2025Abandon4511NoNo
17296605Lignin Extraction with Volatile TrialkylaminesMay 2021September 2024Allow4010NoNo
17327982AMINE FOR LOW-EMISSION EPOXY RESIN COMPOSITIONSMay 2021May 2023Abandon2410NoNo
17296476LIGNIN-BASED POLYOLSMay 2021September 2024Allow4020NoNo
17302982Desulfurized Crude Tall Oil Compositions and Processes for ProducingMay 2021April 2025Abandon4721NoNo
17303020ALIPHATIC EPOXY-TERMINATED POLYSULFIDE POLYMERMay 2021May 2023Allow2410NoNo
17287145Extraction of valuable components from barkApril 2021May 2025Allow4930NoNo
17301490POLY(CYCLOHEXADIENE) HOMOPOLYMER BASED COMPOSITIONS AND USES THEREOFApril 2021September 2023Allow3021YesNo
17282131METHOD FOR PRODUCING OXIDIZED LIGNINSApril 2021September 2024Allow4111NoNo
17282130METHOD FOR PRODUCING OXIDIZED LIGNINSApril 2021April 2025Abandon4921NoNo
17281230EPOXY RESIN COMPOSITIONMarch 2021October 2024Abandon4321NoNo
17214502Molding Material, Fiber-Reinforced Composite Article and Method for Producing Fiber-Reinforced Composite ArticleMarch 2021April 2024Allow3640YesNo
17278841EPOXY RESIN COMPOSITIONMarch 2021March 2025Allow4730YesNo

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
23.1%
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
20.6%
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 951 patent applications in our dataset. With an allowance rate of 64.4%, this examiner allows applications at a lower rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 31 months.

Allowance Patterns

Examiner KARST, DAVID THOMAS's allowance rate of 64.4% places them in the 17% 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 2.45 office actions before reaching final disposition. This places the examiner in the 84% percentile for office actions issued. This examiner issues more office actions than most examiners, which may indicate thorough examination or difficulty in reaching agreement with applicants.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by KARST, DAVID THOMAS is 31 months. This places the examiner in the 35% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +11.7% benefit to allowance rate for applications examined by KARST, DAVID THOMAS. 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, 21.9% of applications are subsequently allowed. This success rate is in the 18% percentile among all examiners. Strategic Insight: RCEs show lower effectiveness with this examiner compared to others. Consider whether a continuation application might be more strategic, especially if you need to add new matter or significantly broaden claims.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 41.6% of cases where such amendments are filed. This entry rate is in the 56% 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 62% 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 36% 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, 57.1% are granted (fully or in part). This grant rate is in the 72% 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 0.9% 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 1.0% of allowed cases (in the 56% 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.
  • Expect multiple rounds of prosecution: This examiner issues more office actions than average. Address potential issues proactively in your initial response and consider requesting an interview early in prosecution.

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.