Apple's legal actions against Samsung -- which in Europe have escalated into a preliminary injunction against the Galaxy Tab 10.1 -- also pose a considerable risk to its own business, an intellectual property lawyer tells Reuters. Nathan Mattock of Marque Lawyers warns that if Apple loses, it will owe Samsung a "considerable amount" in damages, based on months or years of legal struggle and lost business. Reuters adds that Apple still has to provide more substantial evidence of patent or design infringement to have a chance at making any bans permanent.