In the legal battle that HTC faced, they were sued concerning a patent infringement and subsequently lost. The Texas-based Acacia Research Group, a patent licensing company, was given an injunction against HTC smartphones which were sold via Deutsche Telekom (aka T-Mobile) in Germany. As for the infringed patent concerned, it treads on voice coding technology territory.
Taking into consideration that the ban will only happen later in December, this means that whoever wants to pick up a HTC handset via Deutsche Telekom can still do so now before the window of opportunity closes. HTC is no doubt working round the clock for a solution that will circumvent this sales ban if and where possible.