Novartis AG wants Roche Holding AG to return $210 million after accusing the company’s Swiss rival of inappropriately pocketing fees from a 16-year-old patent licensing agreement, according to a lawsuit in U.S. District Court.

The U.S. Justice Department sued Walmart Inc., accusing the world’s largest retailer of fueling the opioid crisis in the United States, ignoring warning signs from the company’s pharmacists and filling thousands of invalid prescriptions.

Catalyst Pharmaceuticals filed new patent infringement lawsuits against Jacobus Pharmaceuticals and PANTHERx Rare LLC over a treatment for the rare autoimmune disease Lambert-Eaton Myasthenic Syndrome (LEMS).

The U.S. Justice Department charged Teva Pharmaceutical Industries Ltd. with conspiring with competitors to raise prices for generic drugs.

A U.S. district court ruled in favor of generic drugmaker Mylan NV in a patent dispute over Biogen Inc.’s blockbuster multiple sclerosis drug Tecfidera, sending Biogen’s shares down nearly 6 percent.

Shares of Amarin Corporation were down more than 70 percent in trading after a judge ruled that generic companies can go ahead and seek approval of generic versions of the drug manufacturer’s heart disease drug Vascepa.

John Kapoor, the founder of Insys Therapeutics Inc., could be sentenced to several years in prison and ordered to forfeit up to $113 million for his role in a bribery and fraud scheme that contributed to the U.S. opioid crisis.

One year after his arrest, PixarBio CEO Francis Reynolds was convicted of defrauding investors of $12.7 million.

Baxter International Inc. was named in a complaint for improperly marketing opioid drugs and revealed an internal probe into the medical supplier’s accounting, sending the company’s shares down.

Catalyst Pharmaceuticals Inc., under fire for a high price tag on a rare disease drug, sued the U.S. Food and Drug Administration to challenge the recent approval of a lower-cost rival medicine.