Google isn't letting BT's Android patent lawsuit go unanswered, even if it's taking its sweet time. Over a year after BT struck first, Google has filed a countersuit against BT that claims the provider is infringing four patents relating to IP-based conferencing and quality of service delivery. The search firm makes clear that its lawsuit is leverage for a possible truce: it's using the action as a "last resort" to fend off both BT and the patent holding companies that BT
