[Crazycarl]

Originally Posted by Valve

Valve, the Valve logo, Half-Life, the Half-Life logo, the Lambda logo, Steam, the Steam logo,
Team Fortress, the Team Fortress logo, Opposing Force, Day of Defeat, the Day of Defeat logo, Counter-Strike, the Counter-Strike logo,
Source, the Source logo, Valve Source and Counter-Strike: Condition Zero are trademarks and/or registered trademarks of Valve Corporation.

They already made Black Mesa drop the "Source" from their name.

Also this does not belong in this section.