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.

The U.S. Supreme Court agreed to hear a bid by President Donald Trump’s administration to revive pilot programs adopted by the states of Arkansas and New Hampshire that allow work requirements to be imposed on people who receive healthcare under the Medicaid program for the poor.

Walmart

Walmart Inc. filed a lawsuit against the federal government, seeking clarity on the roles and legal responsibilities of pharmacists and pharmacies in filling opioid 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. Federal Circuit Court of Appeals in Washington, D.C. reinstated a 2017 jury verdict against Teva Pharmaceutical Industries, ordering the company to pay GlaxoSmithKline $235.5 million in a 13-year-old induced patent infringement case.

A federal appeals court overturned a judge’s approval of a novel plan by lawyers representing cities and counties suing drug companies over the U.S. opioid crisis that would bring every community nationally into their settlement talks.

Teva

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

A federal appeals court upheld two patents for Amgen’s multibillion-dollar rheumatoid arthritis drug Enbrel, rejecting Novartis’ effort to void the patents.

A Missouri appeals court rejected Johnson & Johnson’s bid to throw out a jury verdict in favor of women who blamed their ovarian cancer on the company’s baby powder and other talc products, but reduced its damages award to $2.12 billion from $4.69 billion.

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.