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Expired European patentEurope

Amino-derivatized phosphite and phosphate linking agents, phosphoramidite precursors and useful conjugates thereof

EP 0261283 B1 · Applicant: APPLIED BIOSYSTEMS, INC.

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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 September 22, 1986 and granted January 15, 1992. A European patent lasts at most 20 years from filing, so its term ended September 22, 2006.
  • 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 March 22, 2012.
  • 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.
FiledSeptember 22, 1986
PublishedMarch 30, 1988
GrantedJanuary 15, 1992
Term endedSeptember 22, 2006
Application numberEP 86307285
Classification (CPC)C07F9/65842 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedSep 22, 1986PublishedMarch 30, 1988Patent grantedJan 15, 1992Term endedSep 22, 2006

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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