Canada Antitrust Watchdog Sues Google, Seeking Ad Tech Breakup

Canada’s antitrust regulator is taking Alphabet Inc.’s Google to court for alleged abuse of dominance in web advertising, adding to a mounting pile of legal challenges for the search giant.

Google illegally tied together advertising tools to maintain market supremacy and used this position to skew ad auctions by preferring its own tools, the Competition Bureau alleges.

The agency said Thursday it applied to the Competition Tribunal, a court-like independent body, for three forms of redress:

1. That Google sell two ad tools — publisher ad server DFP and ad exchange AdX
2. That Google pay a penalty worth three times ...