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Patent Act

Version of section 51 from 2002-12-31 to 2019-10-29:

Marginal note:When assignment void

 Every assignment affecting a patent for invention, whether it is one referred to in section 49 or 50, is void against any subsequent assignee, unless the assignment is registered as prescribed by those sections, before the registration of the instrument under which the subsequent assignee claims.

  • R.S., c. P-4, s. 53

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