Steve Powell will appear in court Monday morning for a hearing on his motion. His attorney has argued that a search warrant used to collect files from his home last summer was illegal and that all evidence must be suppressed.
Authorities say they found thousands of images of females being videotaped without their knowledge, including Susan Powell. Some of the girls were as young as 8 years old.
Steve Powell has pleaded not guilty. His trial is scheduled to begin in two weeks.
Utah investigators say they are still interested in speaking with Steve Powell about the disappearance of his daughter-in-law. They say he has been uncooperative in that investigation.