I got this idea about mobile advertising a couple years ago. Since then, I have been writing this in my note whenever I have time.  About two month ago, I started writing specification and drawing to file a provisional patent and finally finished it this week and mailed it in to USPTO today!  Provisional Patent gives me one additional year to test and market my invention before investing in the cost of a regular patent. But, if I decide to file a foreign patent, I need to file it within a year. Anyway, I am glad it is finally over—at least the first part—and I hope it pans out.

I recommend this book “Patent It Yourself” from NOLO. It’s a detailed step-by-step guide to filing a patent.