Wi-Lan, a Canadian firm that holds lots of patents and makes no products, has sued 22 firms over Wi-Fi and DSL power consumption patents: They venue shopped and sued in the Texas court known for finding in favor of patentholders. Firms sued include Apple, Atheros, Belkin, Broadcom, Buffalo, Intel, Marvell, and NetGear. The rights of patentholders that have no competitive products were circumscribed by the Supreme Court to limit their power in getting injunctions. But patent-holding firms that exist to license still have plenty of rights. Some of these firms are called patent trolls, but I can't see Wi-Lan getting that sobriquet because their portfolio is targeted and descends from actual product work. Others may feel differently.