ExamPat

Joseph R Kosack

USPTO Patent Examiner·Active 2023 to 2026

Joseph R Kosack is a USPTO patent examiner who has handled 26 ex parte reexaminations between 2023 and 2026, with 18 currently open. These reexams concentrate in Life Sciences & Consumer, Chemistry & Materials, and Electrical & Electronic. ExamPat indexes the full prosecution record for each of these cases, including office-action grounds, certificate outcomes, and downstream PTAB and federal-circuit decisions.

Filings by year

1
23
6
24
11
25
9
26

Technology mix

Life Sciences & Consumer8 (30%)
Chemistry & Materials7 (26%)
Electrical & Electronic6 (22%)
Mechanical & Manufacturing4 (15%)
Textiles & Paper1 (4%)
Mechanical Engineering1 (4%)

Compare against all examiners

Eight side-by-side metrics: case volume, pendency, OAs per reexam, rejection mix, SNQ denial rate, certification rate, and PTAB appeal rate, with a Δ column showing where this examiner runs higher or lower than the corpus.

  • Average and median pendency, both for this examiner and the corpus
  • Rejection basis split (102 / 103 / 112) head-to-head
  • Certification, SNQ denial, and PTAB appeal rates

Certificate outcome distribution

How this examiner's certificates split across the six possible outcomes: all claims confirmed, confirmed with amendment, confirmed with new claims, mixed, or all claims canceled. Includes share comparison to the corpus distribution.

  • Count and share for each of the six outcome buckets
  • Δ vs. corpus distribution in percentage points
  • Useful for setting realistic patent-owner expectations

Event-to-event timing

Median time for this examiner's cases at each prosecution stage, from filing to first office action, filing to NIRC, and filing to certificate, with corpus comparison and sample size.

  • Median in months per transition
  • Side-by-side with the corpus median
  • n column showing how many of this examiner's cases completed each transition

vs. all examiners

Certificate outcome distribution

Event-to-event timing (median)

Recent reexaminations (showing 25 of 26)

View all in dashboard →
Control #FiledPatentTitlePendencyStatus
90/016,337May 26, 20269,596,857INSECTICIDAL AND MITICIDAL MIXTURES OF BIFENTHRIN AND CYANO-PYRETHROIDS—Open
90/016,336May 26, 20269,107,416INSECTICIDAL AND MITICIDAL MIXTURES OF BIFENTHRIN AND CYANO-PYRETHROIDS—Open
90/016,316May 20, 2026RE48,687PYRIDINYLAMINOPYRIMIDINE DERIVATIVES, PREPARATION PROCESS AND USE THEREOF—Open
90/016,281May 14, 202612,601,064CORROSION CONTROL FOR WATER SYSTEMS USING PASSIVATORS AND A HYDROXYCARBOXYLIC ACID—Open
90/016,218Apr 29, 20268,759,818DEUTERATED COMPOUNDS FOR ELECTRONIC APPLICATIONS—Open
90/016,100Mar 30, 202612,075,621THREE-DIMENSIONAL MEMORY DEVICE AND METHOD FOR FORMING THE SAME—Open
90/016,018Feb 27, 202612,404,596ELECTROCHEMICAL METAL DEPOSITION SYSTEM AND METHOD—Open
90/015,965Feb 17, 202612,415,003Stable, concentrated radionuclide complex solutions—Open
90/015,882Jan 14, 20267,750,066TREATMENT OF AQUEOUS COMPOSITIONS CONTAINING CONTAMINANTS—Open
90/015,793Dec 19, 20259,144,581COMPOSITIONS AND METHODS FOR PRODUCING STABLE NEGATIVE OXIDATION REDUCTION POTENTIAL IN CONSUMABLE MATERIALS—Open
90/015,792Dec 19, 20258,852,660COMPOSITIONS AND METHODS FOR PRODUCING STABLE NEGATIVE OXIDATION REDUCTION POTENTIAL IN CONSUMABLE MATERIALS—Open
90/015,551Sep 29, 202510,875,346LITHOGRAPHIC PRINTING PLATE PRECURSOR, LITHOGRAPHIC PRINTING PLATE MANUFACTURING METHOD AND PRINTING METHOD—Open
90/015,548Sep 26, 202511,294,279LITHOGRAPHIC PRINTING PLATE PRECURSOR, AND METHOD FOR PRODUCING LITHOGRAPHIC PRINTING PLATE—Open
90/015,482Sep 12, 20257,524,614NEGATIVE-WORKING RADIATION-SENSITIVE COMPOSITIONS AND IMAGEABLE MATERIALS—Open
90/015,460Aug 18, 202512,144,873Stable, concentrated radionuclide complex solutions—Open
90/015,415Jul 28, 202510,374,221SCAFFOLDING MATRIX WITH INTERNAL NANOPARTICLES—Open
90/015,347Jun 27, 202512,209,354CONTINUOUS POLYESTER FIBER TEXTILE CLOTH, PROCESSING EQUIPMENT AND METHOD9 moClosed
90/019,885Mar 21, 202512,024,484LIPID FORMULATIONS FOR GENE EDITING11 moClosed
90/019,830Jan 23, 202511,555,046CRYSTALLINE FORM OF L-GLUFOSINATE AMMONIUM SALT AND PROCESS FOR PRODUCTION THEREOF11 moClosed
90/019,809Jan 13, 20259,068,142REDUCED FLUORIDE CRUSTACEAN OIL COMPOSITIONS—Open
90/019,776Dec 13, 202410,000,520B-VITAMIN AND AMINO ACID CONJUGATES OF NICOTINOYL RIBOSIDES AND REDUCED NICOTINOYL RIBOSIDES, DERIVATIVES THEREOF, AND METHODS OF PREPARATION THEREOF—Open
90/019,687Sep 30, 202411,408,508PISTON RING14 moClosed
90/019,612Aug 6, 20247,646,091SEMICONDUCTOR PACKAGE AND METHOD USING ISOLATED VSS PLANE TO ACCOMMODATE HIGH SPEED CIRCUITRY GROUND ISOLATION13 moClosed
90/019,517May 22, 202411,840,526COMPOUNDS AND METHOD FOR PREPARING THE SAME14 moClosed
90/019,447Mar 9, 202410,741,828POSITIVE ELECTRODE ACTIVE MATERIAL INCLUDING LITHIUM COBALTATE COATED WITH LITHIUM TITANATE AND MAGNESIUM OXIDE—Open

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