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Expired Canadian patentCanada

Polypeptide regulating phosphate metabolism, calcium metabolism, calcification and vitamin d metabolism and dnas encoding the same

CA 2418802 C · Owner: Mizutani, Satoru · Inventors: Yamashita, Takeyoshi; Fukumoto, Seiji; Shimada, Takashi

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Abstract From the Canadian patent

The present invention relates, in one aspect to the use of a , polypeptide for decreasing the blood levels of phosphate calcium, and/or , la,25-dihydroxyvitamin D in a subject. The polypeptide may consist of the amino, acid sequence represented by SEQ ID NO: 4. The polypeptide represented by SEQ ID NO: 4 may be modified by at least one of polyethylene glycol dextran, poly(N-vinyl-pyrrolidone), polypropylene glycol homopolymer copolymer of , polypropylene oxide and polyethylene oxide polyoxyethylated polyol and , polyvinyl alcohol. In another aspect, the invention relates to a neutralizing antibody that , specifically binds to a polypeptide consisting of the amino acid sequence …

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

Why it's free to use

  • Filed August 10, 2001 and granted October 23, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 2001
GrantedOctober 23, 2012
Term endedAugust 10, 2021
Patent numberCA 2418802 C
Classification (IPC)C12N15/09 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedAug 10, 2001Patent grantedOct 23, 2012Term endedAug 10, 2021

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.