The company has asked the U.S. patent office to reconsider patents that could prevent it from selling an update to Keytruda.

Please visit the Merck media library for images and b-roll of the new Durham facility. About Merck At Merck, known as MSD outside of the United States and Canada, we are unified around our purpose: We ...

Now it is Merck & Co. under the microscope. On Tuesday, the company reported fourth-quarter earnings that beat expectations, with $15.6 billion in sales surpassing Wall Street estimates.