Two US patents shielding Impax’ Zomig (zolmitriptan) nasal spray are not invalid, a US Court of Appeals has affirmed, upholding an unfavourable lower court ruling against abbreviated new drug application (ANDA) filer Lannett.
The US player had appealed against Delaware District Judge Richard Andrews’ finding that US formulation patents 6,750,237 and 7,220,767 were...



