Ask YC: Patents in US- Android competition

Please, could you share your experience in patents for software particularly in mobile communication? Any examples of valid patent application would be very helpful e.g. has Loopt any? Also general advices for what to look for and be aware in patent process (before I dive in to read the whole patent spec).

Im from Europe and consider to take part in Android challenge, but without patent I guess I can't stand a chance; the idea is the important part.

Thanks a lot- Stepan