Lenczner Slaght LLP v. GlycoBioSciences Inc., 2025 ONCA 841
2025-12-05
Read full decision. Summary prepared by Alan Macek:
His conduct of litigation over those years has increasingly drawn negative comment from the bench and adverse costs awards some of which were made on a substantial indemnity basis and many of which remain unpaid. ... the issue is rather that he repeatedly brings proceedings that are misconceived and have no prospect of success. ... Glyco resists the characterization that it is operating as a “patent troll” or otherwise pursuing a business model of bringing nuisance actions to secure small settlements. But regardless of what Glyco’s legitimate interests may be, and however successful or legitimate its commercial history may have been, it is incontrovertible that Glyco – at the direction of Mr. Drizen – has, since at least 2017, serially engaged in litigation in a vexatious manner.