Overbreadth

October 17, 2023
Photograph of two cell towers against a blue sky

To Claim (Broadly), or Not to Claim? The Double-Edged Sword of Patents

Fed. Cir. 2022-1387, 2022-1492: In a recent decision, the Court of Appeals for the Federal Circuit cautioned patent holders against broadening amendments.
August 9, 2021
Photograph of an auto-injector needle with a drop of liquid at the tip of the needle.

Federal Court of Appeal Reaffirms Overbreadth as Grounds for Invalidity

2021 FCA 154: The FCA held that overbreadth is not an “improper re-emergence of the promise doctrine”. Overbreadth is supported by bargain theory and s. 27 of the Act.
November 14, 2017
insomnia

Federal Court finds Insomnia-treating Drug Patent neither Invalid nor Infringed

2016 FC 1362 - The formulation patent for the insomnia-treating drug zolpidem was found to be substantially valid, but not infringed by Pharmascience's generic version of zolpidem.
April 22, 2016

Federal Court Finds “Rigidification” Patent to be Sufficient but Obvious

2015 FC 997 - The FC found that the invention was merely to add a polymer to the slurry, which was known in the prior art, and to continue to do so until the slurry rigidified. The Court found this solution to be obvious to try, and sufficiently disclosed, even though the meaning of “rigidify” was never made clear.
March 3, 2015

Physical Stability Experiments did not Adequately Demonstrate or Soundly Predict Utility for Overbroad Eye Drop Patent

Alcon Canada Inc v Cobalt Pharmaceuticals Company, 2014 FC 149 - The Court examined in detail a number of experiments disclosed in the patent that were said to establish the claimed utility, but the experiments did not demonstrate or soundly predict utility for the broad ranges of molecular weight and chemical concentration claimed.
October 27, 2014

Expert witnesses proven to be pivotal in Dow Chemical patent infringement suit

Dow Chemical Co v NOVA Chemicals Corp, 2014 FC 844 - The Federal Court found that NOVA Chemicals infringed Canadian Patent No. 2,160,705, owned by The Dow Chemical Company, by NOVA’s use of its “SURPASS” polyethylene product. Allegations of invalidity for lack of utility, claims broader than any invention made or disclosed, anticipation, obviousness, double patenting, and insufficiency of the specification were unsuccessful.
January 23, 2014

Human Antibody Patent Upheld at FC

AbbVie Corporation v Janssen Inc. [2014 FC 55]   Background The action is in respect of a patent directed to human antibodies capable of binding a […]