"Whether this is anything more than bluster remains to be seen, but it is not the first time that Sisvel, which has been dubbed Europe’s first patent troll in the past, has sparked controversy over its aggressive use of the law to bring companies to the licensing negotiating table. Similar raids to the one last week were conducted in Hanover earlier this year and in Berlin in 2006. Sisvel has also been active in Italy. And the reason the company does it? Well that's simple: it works. Few would be surprised if in a few weeks we see a notice that Teco and other companies raided in Berlin have become licensees."