Tesla Polyphase Patents Declared Invalid in Germany

The Reichsgericht of Germany has confirmed the decision of the lower courts declaring the Tesla polyphase motor patents invalid. The court reviewing the case, holds that the patents are void owing to their not having been worked according to the requirements of the German patent law. The court goes on to say, however, that even if the patent had been sustained on that ground, it would have been, nevertheless, invalidated owing to the fact that the invention was not adequately described in the German patent specification, whereas the American patent specification is clear. It is understood that the Helios Co., of Cologne, who control the Tesla patents in Germany, will no longer contest the suits which it has brought against several parties in Germany.