I built an electronic version of a popular board game. I got some good responses on avoiding legal issues, but I went ahead and built it anyway, keeping it private for obvious reasons. Everyone who has seen it, loves it.
I've taken care to avoid using any trademarks or copyrightable content, but I'd much rather licence the use of these officially, which I believe can do well as an official app.
I did find one other developer who received a cease-and-desist for using the IP holder's trademark, so I want to avoid this in the first place. If the IP holder denies my request, I don't want to be red-flagged and sent a cease-and-desist letter "just in case". I am willing to fight for fair-use, but I want to make sure I have a solid footing and am not willfully infringing on anything.
How should I approach the IP holder to get endorsement for my mobile game? How should I represent myself? Should I do it myself or through a lawyer? Via email, fax? Should I show my game? Should I brand an "official version", private version and show it to the copyright holder? Should I show them at all when contacting them?
I would appreciate any guidance in approaching this sensitive issue without just handing over my position.
Update: Based on your excellent feedback, I'm leaning toward first popularising a generic version of my product for this genre of game (don't worry, it could be used for any of the games in this category and I am not using any copyrightable materials or trademarks). Marketing it will be hard, though. Getting a licence deal seems much less likely than a buy-out if I have many users of my generic app. Perhaps they will be interested in buying it later, but until then, I am glad to play it with friends :).