The U.S. 4th Circuit Court of Appeals again upheld yesterday the conviction of Washington area estate entrepreneur Louis J. Pomponio and lawyer Charles J. Piluso of interstate travel to commit bribery in New York.

In a unanimous opinion for a three judge panel, the court said that a conflict between the 4th circuit and 2nd circuit appeals courts on the law in the case is not sufficient grounds to reverse the convictions. The 2nd circuit court has ruled in another case that New York's commercial bribery law is not covered by the federal law prohibiting interstate travel to commit crimes.

Piluso already has served a two-year sentence for his conviction under the travel act. Pomponio is serving four years for interstate transportation of property obtained by fraud and for the travel act violation. Pomponio's brothers, Paul and Peter, are serving three-year terms for tax fraud.

The convictions resulted from an investigation of the Pomponio brothers' once gigantic real estate operations in Northern Virginia and Washington. Piluso was a legal adviser to them in their business dealings. His lawyer, Albert J. Ahern, said he will appeal the 4th circuit ruling to the U.S. Supreme Court.