Plaintiffs have asked the full 7th U.S. Circuit Court of Appeals in Chicago to reconsider a ruling made earlier this month that International Business Machines Corp.'s cash balance plan did not discriminate against older workers, confirmed a spokeswoman at the court clerk's office. As first reported Monday afternoon on Pensions & Investments' website, pionline.com, plaintiffs are asking that the case be reviewed by the entire 11-member panel. The original appellate ruling was made by three judges on Aug. 7. The appellate court ruled that IBM's $48 billion cash balance plan did not unfairly favor younger workers, reversing a 2003 ruling in U.S. District Court in East St. Louis, Ill. Armonk, N.Y.-based IBM had agreed to pay up to $1.4 billion to the plaintiffs if it didn't win the case on appeal.