Web-TV service TVCatchup has been hit with a joint legal challenge from three British broadcasters alleging infringement of their copyright.
The Freeview streaming service, which launched on iPhone and iPod Touch in October 2009, found its World Cup preparations disrupted last week by a joint legal filing from ITV, Channel 4 and Five.
"TVCatchup do not have a content distribution agreement in place to stream content from any of our channels," said the broadcasters.
"We reserve the right to pursue any site or service we believe to be infringing our copyright or using our content in an unlicensed, illegal capacity."
ITV's desire to tackle TVCatchup has been made more pressing by the launch of its own web-TV iPhone app, which enables users to watch a live simulcast of ITV1 and ITV2.
The two channels are already available on TVCatchup's website and mobile app, along with a near-live simulcast of Channel 4, E4 and Five.
In response to the legal filing, TVCatchup told the Financial Times that it has already applied for court approval of its streaming service.
"TVCatchup is committed to resolving any issue concerning our content distribution, but this will now be an unnecessarily protracted process," said the company.
"Given our free service has developed to be arguably superior to the broadcaster's own offerings in terms of reliability, accessibility, choice and quality, some form of disagreement was inevitable."
The BBC is also understood to be talking to TVCatchup, with the corporation particularly concerned about advertising being run around licence fee-funded content.
In February 2008, TVCatchup was forced to close after broadcasters complained about the "unauthorised commercial exploitation" of their content rights from a recording function on the service.
The website stayed offline until resurfacing in October 2008. It now enables users to watch almost live (one minute delay) transmissions of certain Freeview channels, but without the PRV function. Anyone using the service must have a valid TV licence before accessing the content.
i've never understood how they are allowed to do it anyway in the first place. hope it doesn't go as its a great thing having all the channels in one place rather than having to go to different apps.
they have an ipad landing page now too but the quality leads a lot to be desired compared to the iphone one.