European Union regulators said on Aug. 23 they had charged U.S. memory chip maker Rambus Inc. with antitrust abuse, alleging that the company set “unreasonable” royalties for DRAM patents fraudulently set as industry standards.

The EU’s preliminary charges come weeks after the U.S. Federal Trade Commission ruled that the company deceived a standards-setting committee, failing to disclose that its patents had been incorporated into an industry standard for memory technology.