Suit against Johnson & Johnson’s Canadian subsidiary involves alleged link to ovarian cancer.
Pharmaceutical firm’s lawyer cites an absence of an easily defined class of complainants.
Lawyers say court action that started in 2004 has grown too complex and costly.
Suit to involve makers of the drug, Abbott Laboratories and generic manufacturer Apotex.
Canadian car dealers have launched three class-action lawsuits iagainst several auto parts manufacturers, claiming they colluded to fix prices for nearly a decade.