According to the BBC, Huawei believes that software used in Samsung products breach its patents.
But the row may well come to nothing because the same report claims that Huawei will be a happy bunny if Samsung does a cross licensing deal for some of its kit too.
So the case may never come to court and is likely to be just a storm in a mobile teacup.
A Samsung rep told the BBC that it will defend its business interests. Many of the companies involved in the mobile industry kiss and make up long before the expensive and tedious business of actually taking another company to court gets to the preliminary legal stages.
Such cases can and do last for years and cost IT companies a fortune.