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US judge allows surprise third-party testimony in Cumulus-Nielsen antitrust case

By Chris May ( December 10, 2025, 00:25 GMT | Insight) -- Nielsen’s defense against a preliminary injunction bid from radio broadcaster Cumulus Media encountered a last-minute obstacle Tuesday after a New York federal judge decided to allow unplanned courtroom testimony from the chief executive of a local radio ratings provider that has allegedly been stymied by Nielsen’s monopolistic conduct.Nielsen Media Research’s defense against a preliminary injunction bid from radio broadcaster Cumulus Media encountered a last-minute obstacle Tuesday after a New York federal judge decided to allow unplanned courtroom testimony from the chief executive of a local radio ratings provider that has allegedly been stymied by Nielsen’s monopolistic conduct....

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