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Expired Canadian patentCanada

Composition for the topical treatment of glaucoma or ocular hypertension

CA 1301654 C · Owner: Pharmacia Biosystems Aktiebolag · Inventors: Hoyng, Philip; Stjernschantz, Johan

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention provides a composition for topical treatment of glaucoma or ocular hypertension, comprising an effective intraocular pressure reducing amount of a mixture of an adrenergic agonist and a phosphodiesterase inhibitor in an ophthalmically compatible carrier. The invention also comprises a method for treating glaucoma or ocular hypertension by means of administering said composition to the eye affected.

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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

  • Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 24, 1988
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301654 C
Classification (IPC)A61K31/52 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 24, 1988Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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