As Canadian trademark practitioners know, historically it has generally been difficult to obtain interlocutory (or interim) injunctions in trademark infringement matters. This has been particularly so due to the difficulty in showing irreparable harm, if the injunction were not granted.

As the recent decision of the Alberta Court of Queen’s Bench in Corus Radio Inc. v. Harvard Broadcasting Inc., 2019 ABQB 880 shows, there may be some novel ways to argue irreparable harm, including what is essentially a consideration of ‘lost opportunity’. In this case, a trademark owner was able to convince the Court to enjoin use of similar marks by another party, notwithstanding some 15 years’ absence of use by the owner in the relevant marketplace.

Read more in this Knowledge Bytes article.