The U.S. Federal Trade Commission won't block Google's $750 million attainment of cell phone advertising dealer AdMob because the contract isn't likely to mischief competition in the emerging mobile advertising market, the agency.

Google's attainment of AdMob, proclaim in late 2009, merge the two leading mobile advertising networks in the U.S., raising "serious antitrust concerns," the FTC said in a statement.

But Apple's statement in April that it would launch its own ad network "overshadowed" the antitrust concerns that the FTC had about Google's AdMob acquisition.

"As a effect of Apple's entrance keen on the market, AdMob's achievement to date on the iPhone platform is improbable to be an precise predictor of AdMob's competitive implications going forward, whether AdMob is hold by Google or not," the FTC said in a statement.

Some other companies emerge to be increasing or acquiring smartphone platforms to superior compete against Apple's iPhone and Google's Android, the FTC said. These companies would have a strong motivation in maintaining a competitive mobile advertising industry, the FTC said.