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Expired Canadian patentCanada

Systems and methods for extensions and inheritance for units of information manageable by a hardware/software interface system

CA 2815562 C · Owner: Microsoft Technology Licensing, Llc · Inventors: Smith, Walter R.; Raman, Balan Sethu; Spiro, Peter M.

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

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Abstract From the Canadian patent

Embodiments disclosed herein pertain to a method a system and a , computer-readable medium for organizing and querying a plurality of Items including discrete , storable units of information that are manipulated by a hardware/software interface system. , The Items have a data type and structure defined by a type schema. The plurality of Items , includes a first Relationship relating a first Item and a second Item. A third Item is created, wherein the third Item is a subtyped instance of the first Item. For each of a first plurality of , subtyped instances of the first Item each of the first plurality of subtyped instances , automatically inherits from the first Item a Relationship …

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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 July 29, 2004 and granted February 17, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 29, 2004
GrantedFebruary 17, 2015
Term endedJuly 29, 2024
Patent numberCA 2815562 C
Classification (IPC)—

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJuly 29, 2004Patent grantedFeb 17, 2015Term endedJuly 29, 2024

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