Apple (AAPL), Google (GOOG), Microsoft (MSFT) and other leading technology companies spend millions each year lobbying Washington, and now Samsung (005930) is learning that it too needs to grease the wheels a bit more actively if it hopes to compete with top rivals in the U.S. According to regulatory filings analyzed by Bloomberg, Samsung boosted its lobbying spend to $900,000 in 2012, up 500% from $150,000 in 2011. Rival Apple spent twice that amount in 2012 and Google spent a whopping $18.2 million. Samsung’s lobbying expenses will likely rise even faster in 2013 as it continues to battle Apple in court.