стать общедоступным(о конфидениальной информации; в договорах) e.g., Confidential Information will not include any information that becomes part of the public domain through no fault of Consultant. 4uzhoj)
арбитр со стороны кого-либо(The arbitrator on the part of the United States was the Hon. John G. Carlisle; on the part of San Domingo Señor don Manuel de J. Galvan; t'More)
с одной стороны стороны(reference in a written contract to identify one of the people entering into the agreement. The agreement would read "Mary McConnell (hereinafter called The Party of the First Part)." thefreedictionary.comTelecaster)