The royalty battle between Qualcomm and Apple just took a nasty turn, according to a new report that claims the chipmaker is aiming to deal a major blow to Cupertino’s iPhone business.

Korean electronics giant Samsung has today announced that it will drop its patent-infringement lawsuits against Apple in Germany, France, Italy, the Netherlands, and the United Kingdom. The announcement comes just hours after Apple was denied its request to have 26 Samsung devices banned in the United States — though the two cases are unrelated.

Qualcomm, the company that manufactures Apple’s baseband chips for iOS devices, has slammed the Cupertino company in an official ITC filing over its response to questions regarding the availability of injunctive relief over SEPs and criteria for FRAND royalty rates.

Qualcomm says Apple’s thoughts on the subject are a “sham,” that the company “should be ashamed of itself.”