I thought that Pozi was introduced by Phillips themselves, Klein is saying here it's their trademark. Was Klein involved in the introduction of Pozi, or since bought some rights or a company who had those rights?
Pozidriv was invented by Phillips Screw Company in America. It was sort of their version of the JIS concept of a non-camming out cross drive system. However, as is so often the case, no man is a profit in his own land, and the idea died a quick death in America. The Europeans on the other hand knew a better mouse trap when they saw one. It's virtually universal in Europe as it well should be as it's a superior system just as JIS was (JIS has now been incorporated into the latest Phillips bit standards) so in fact it no longer exists as a separate entity. Of course the DIN standard is only followed in Europe and Asia so we in the USA are still stuck with inferior Phillips bits. The superior DIN bits work great in both Phillips and JIS screws. Pozidriv is too different from either of these to be able to make one type fits all so for Pozidriv you still need Pozidriv bits.