Genus is facing new patent infringement litigation in the US.
The company - a global pioneer in animal genetics - said Inguran, XY and Cytonome/ST, (collectively ST) had filed patent infringement proceedings against ABS Global, Genus and Premium Genetics (UK) (collectively ABS) in the US District Court for the Western District of Wisconsin.
Genus said: "The new litigation alleges that ABS infringes seven ST patents and asserts trade secret and breach of contract claims."
It said that ABS intended to vigorously defend ST's latest legal action.
An update said: "The litigation is part of the long running dispute between ST and ABS in connection with the development and launch of Genus Sexed Semen technology (GSS), a proprietary product designed to compete with ST's monopoly in the processing of sexed bovine semen.
"In previous litigation initiated by ABS, the court for the Western District of Wisconsin awarded ABS a permanent injunction against ST based on the finding that ST had wilfully maintained an illegal monopoly in the market for sexed bovine semen processing in the US since July 2012.
"The court also found ABS had infringed two ST patents and awarded damages and post judgment royalties.
"ABS has filed a notice of appeal on one of these patents and an inter-partes review oral hearing at the US Patent Office is scheduled shortly on the other.
"The US Patent Office had earlier found two other ST patents challenged by ABS to be unpatentable."