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Expired European patentEurope

Polyaspartamide derivative as adsorbent for bile acids, polyaspartamide loaded with bile acids and preparation and use as a drug

EP 0548794 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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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.

Why it's free to use

  • Filed December 17, 1992 and granted June 9, 1999. A European patent lasts at most 20 years from filing, so its term ended December 17, 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 June 17, 2018.
  • 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.
FiledDecember 17, 1992
PublishedJune 30, 1993
GrantedJune 9, 1999
Term endedDecember 17, 2012
Application numberEP 92121461
Classification (CPC)C08G69/36 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedDec 17, 1992PublishedJune 30, 1993Patent grantedJune 9, 1999Term endedDec 17, 2012

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