The Sofia administration is among the countries labouring to enforce strict measures to defend intellectual property rights but it must work even harder in that direction, US Trade Representative Peter Algoer has said as quoted by the Economy Ministry of Bulgaria. "The United States places a high priority on effective intellectual property protection of American creativity," US Trade Representative Robert Zoellick said. "We are encouraged by the positive steps that several countries have taken to strengthen IPR protection over the past year. However, the need for significant impro