WASHINGTON (AP) -- U.S. antitrust regulators are ready to announce the results of a 20-month investigation into Google's (NASDAQ:GOOGL) business practices.

The Federal Trade Commission has scheduled a 1 p.m. EST press conference to unveil the outcome of the high-profile probe.

The wide-ranging inquiry could result in Google making concessions to avoid a legal battle.

The FTC's investigation focused on allegations that Google has been abusing its dominance in Internet search. Google's rivals say the company has been highlighting its own services on its influential results page while burying the links to competing sites.

Google has fiercely defended its right to recommend the websites that it believes are the most relevant.

The FTC also has been examining whether Google has been using patents to thwart competition in the mobile computing market.

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