Dealscape and affiliate Tech Confidential have been suggesting bankruptcy is a real possibility for Vonage Holdings Corp., which is embroiled in a patent infringement case with Verizon Communications Inc. Now, the Internet phone provider has confirmed in an SEC filing it may file for Chapter 11 (see a list of risk factors in Vonage's 10-K). When the earliest talk of bankruptcy first surfaced, the company brushed aside the negativity, saying it would develop a technical workaround that would avoid the use of Verizon's patents. But the workaround has yet to materialize and Vonage's legal troubles continue to mount, with the possibility of a court-ordered shutdown becoming more real by the day.—Matthew Wurtzel