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Expired European patentEurope

Biotenside esters with vitamin d compounds; their preparation and transformation into spontaneously dispersible concentrates, and their use for treating tumors

EP 0550704 B1 · Applicant: MARIGEN S.A.

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed April 16, 1992 and granted June 21, 1995. A European patent lasts at most 20 years from filing, so its term ended April 16, 2012.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by October 16, 2017.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledApril 16, 1992
PublishedJuly 14, 1993
GrantedJune 21, 1995
Term endedApril 16, 2012
Application numberEP 92908582
Classification (CPC)A61K31/59 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedApril 16, 1992PublishedJuly 14, 1993Patent grantedJune 21, 1995Term endedApril 16, 2012

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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