Leonard J. Chyall

Technical Expert

employed at Chyall Pharmaceutical Consulting, LLC

Leonard J. Chyall's recorded patent work spans two technology areas, concentrated in Pharmaceuticals / Drug Development and Analytical Chemistry / Diagnostics. Chyall has been retained more often by petitioners than by patent owners.

Education

Ph.D., Chemistry — University of MinnesotaB.A., chemistry — Oberlin College
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Litigation record

PTAB & Daubert6matters on record
Retained by60%petitioner or defendant, 40% patent owner or plaintiff

See the 6 matters behind this record

  • Every proceeding by number, with the patent at issue
  • The retaining party and law firm
  • Whether the Board credited or declined to credit the testimony, quoting the decision
  • How each motion to exclude was decided: denied, granted in part, or granted