According to the filing, the Half-Life 3 trademark is owned by Valve but was filed on behalf of the company by Casalonga & Associes, a patent and trademark firm, with the trademark covering “computer game software”, “downloadable computer game software via a global computer network and wireless devices”, and other goods and services. The trademark was filed on the 29th of September but as it stands, there is no equivalent filing in the USPTO. While this definitely looks promising, the alternative is that it does not necessarily mean that the game is in the works, but rather it could mean that Valve is trying to protect its Half-Life franchise from being used by someone else.
Either way hopefully Valve will have an official statement on the matter soon, but what do you guys think? Are you excited?