The dispute centers on subpoenas issued to four potential witnesses for records relating to individual abortions. A Johnson County judge quashed the subpoenas last year. The DA's office appealed.
Former District Attorney Phill Kline filed 107 criminal charges against the clinic in October 2007, accusing it of falsifying records and performing illegal late-term abortions. The clinic denies wrongdoing.
Kline left office in January, but his successor, Steve Howe, said the court's ruling could determine how much evidence is available.
(Copyright 2009 by The Associated Press. All Rights Reserved.)