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File the necessary paper work to get their patent invalidated due to prior art?

http://en.wikipedia.org/wiki/Prior_art

Hopefully it would be easier/cheaper than a protracted head to head lawyer battle.

I am curious now, can you give some details about this? (like the paper work, how does this work when you get a C&D order)

Patent: http://www.google.com/patents/US8195515 Prior arts for this patent: http://goo.gl/YRP2U

I have had no experience doing this myself and I can only echo the other sentiments that you speak to an attorney; it's something that would likely be too risky without one.

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