Unity of invention and double patenting law and practice in Canada can create challenges for patent applicants. For example, applicants may not expect a unity of invention objection to be raised, ...

“The law on ODP after Cellect is unpredictable and retroactively penalizes patent owners who have prosecuted child applications in good faith.” In Part I of this two-part article, we reviewed the ...

"'In re Cellect' and the USPTO’s proposed rule have the potential to fundamentally affect patent practice, particularly in the realm of terminal disclaimers filed to overcome ODP rejections," write ...

Due to the amendments in the Singapore Patents Act effective on or after July 1 2004, the issue of double patenting provides one possible ground for revocation of all Singapore patent applications.