Free-Flow Packaging International Inc., operating as FP International, has filed patent-infringement complaints against competitors Pactiv Corp. and Storopack Inc.
The lawsuits, filed Dec. 22, allege that air-cushion product lines of Pactiv and Storopack infringe on three domestic FP patents issued in 2003.
The suit against Pactiv was filed in U.S. District Court in Wilmington, Del., and the one against Cincinnati-based Storopack in U.S. District Court in Norfolk, Va. Publicly traded Pactiv is in Lake Forest, Ill.
FP of Redwood City employs 500 in the United States and Europe and had annual sales of about $90 million for the fiscal year ended Sept. 30.