Textile firm Kolon on Sunday said it resumed production in Gumi, North Gyeongsang Province for a Kevlar-like fiber, after halting it for one day amid court proceedings in the U.S.

A U.S. court accepted an appeal from Kolon to suspend an injunction halting its worldwide production and sales of the aramid fiber, which is used to make body armor.

Judge Robert Payne in the U.S. District Court for the Eastern District of Virginia on Friday last week ruled in favor of Kevlar maker DuPont, which claimed Kolon had stolen “trade secrets and confidential information” for the trademarked fiber, and ordered a 20-year ban on Kolon’s worldwide production and sales of the product. He fined Kolon $919 million in damages.

The appeal by Kolon will be reviewed and heard in the U.S. Court of Appeals. Kolon says it hopes to get a fair and reasonable ruling. A Kolon spokesman claimed extra-legal matters must have played a role in the decision.