I agree with Craig that without money to enforce a trademark or copyright suit, it`s difficult to keep your IP from being used by someone else. That being said, having copyright and trademark protection means that you can keep others from using your IP either through takedown notices to Google and the infringer`s host or through cease and desist letters (which, of course, won`t work for serious intentional infringers, but will often suffice for unintentional infringers or infringers who don`t understand the law).
Unfortunately, you`ve been in business too long to file a patent (which, to my understanding has to be done within the first year). Let me know if you have other questions.
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