Acadia Pharmaceutical has been litigating to keep out generics for its Parkinson’s Disease drug Nuplazid®. Although Acadia initially sued five separate generics for infringement of multiple patents, all the generics settled-out except one, MSN Pharmaceuticals. And in the case against MSN, only a single patent remains at issue (U.S. Patent No. 7,601,740). MSN recently moved for summary judgment on the ground that the ‘740 patent is invalid for obviousness-type double patenting (ODP). A recent precedential Federal Circuit decision, In Re: Cellect, LLC, addressed the ODP doctrine in detail. How will Cellect affect Acadia’s defense against the last generic holdout for Nuplazid®?
Read MoreI previously blogged about the Exelixis patent dispute. The Cabometyx patent trial occurred last week (May 16). A recent note on Seeking Alpha indicates that comments from the court during the trial suggests that Exelixis may lose on the ‘776 patent, but win on the ‘473 patent. (I was one of two patent experts on the Truist call referenced in the note.) If that happens, will Exelixis still be able to secure freedom from generics through 2030 based upon the ‘439, ‘440 and ‘015 patents asserted in its second lawsuit?
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Exelixis is on the eve of trial against MSN over its prospective generic for Cabometyx. Yet, there are now two separate patent litigations between the companies related to Cabometyx. Exelixis succeeded in slowing down MSN’s entry by keeping the cases separate, but an MSN victor in the upcoming trial may increase the odds of an at-risk launch.
Read MoreI previously blogged (here and here) about the pending Hatch-Waxman lawsuit between Exelixis ($EXEL) and MSN Pharmaceuticals in connection with MSN’s prospective generic for Cabometyx®. The case has been barreling towards trial in May of this year, which would theoretically provide insight into how soon Cabometyx® may face generic competition. This trial date is important because the 30-month stay is scheduled to expire in November 2022. However, a current dispute over scheduling has called into doubt if the trial in May will proceed, and even if it does, if it will provide certainty on MSN’s entry.
Read MoreExelixis ($EXEL) recently received a Paragraph IV certification against its drug, Cabometyx, which is indicated for kidney cancer and as a second-line treatment for liver cancer. The certification was sent by MSN Pharmaceuticals. A lawsuit is likely to be filed by Exelixis against MSN within 45 days of the Paragraph IV certification. How well-positioned is Exelixis to fight this generic challenge?
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