Google is now clearly showing whether the keywords are trademarked or not. The aspect is visible directly in the Google AdWords Keyword Tool.

For example, if a keyword: "iphone" is searched and it is returned with a little symbol near the term, i.e. iphone, then it trademarked. Here is a picture:

The process can prove extremely beneficial for all those advertisers who always look forward to avoid bidding on trademarked terms. I am not exactly sure of the fact as to why this feature is added, but as far as my assumptions are concerned, it would majorly benefit the advertisers out there.

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