Elvis's granddaughter fights Graceland auction
Elvis Presley Enterprises, which runs Graceland and the assets of the Elvis Presley Trust, alleges that the loan never took place and that Lisa Marie never gave her signature.
In a statement, the group said: "Elvis Presley Enterprises can confirm that these claims are fraudulent. There is no foreclosure sale. Simply put, the counter lawsuit has been filed is to stop the fraud."
Keough's claim says the proposed sale would be "non-judicial" and based on paperwork that violates Tennessee law.
A hearing is scheduled to take place on Wednesday, according to court documents.
Elvis bought Graceland Mansion in 1957 and lived there until he died two decades later.
In the early 1980s, the 14-acre compound was opened to the public as a music history theme park. Today it attracts roughly 600,000 visitors a year, according to the venue.
-bbc
