I have similar question but in opposite way.
I drop caught a .com domain (not revealing the name for legal purpose).
Now i have found that there is an Australian company with the same name that have .com.au , .net , .training , .de and may be 1-2 more extensions.
But they don't have the .com
Since i am looking to sell out my domain name, can i contact to the company? Is it possible that they take the domain from me for free stating Legal Matters. The domain name is not trademarked yet.
Also can i sell it big?
Suggestions please.