This is great news. Hopefully it will send out a message that you can't just sit on a patent and wait for someone to infringe it.

And if Siemens have claimed any royalties in respect of this falsely-granted patent, they can be expected to have to pay them back with interest.

The judge allowed technical evidence to be given?

Obviously Siemens tried this case in the wrong state. Texas FTW (if you're a patent troll).

Though TBH who cares about Siemens? About the only thing I ever see with their name on it is my Dads cell phone which I keep trying to get him to get rid of.

....obviously to impress the jury. He's no engineer and being mathematically adept to the point of ferreting out electroweak unification is not going to help a lot in solid-state physics, thin-film technology or harddisk design.