Both Merck & Co. and Halozyme are holding their ground in a freshly unveiled patent dispute surrounding the New Jersey pharma ...

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

Merck's injected version of its blockbuster cancer drug Keytruda could face a potential patent challenge from biotech ...

The new formulation of Keytruda, currently under FDA review, is sparking conflict with Halozyme, which makes enzymes that ...

Merck (MRK) has been adjusting Keytruda to make it easier to use and to protect the company for after the U.S. patent protection runs out in ...

Merck's newly developed injected version of its blockbuster cancer drug, Keytruda, may be at the center of a potential patent ...

Merck (MRK) stock trended lower as Halozyme (HALO) challenges the company over injectable Keytruda patents. Read more here.

Shares in pharmaceuticals giant Merck (MRK) weakened today on fears that a patent battle could jeopardize its plans to sell a ...

Merck (NYSE: MRK) recently released its Q4 results, with revenues and earnings exceeding the street estimates. The company reported revenue of $15.6 billion and adjusted earnings of $1.72 per ...

Merck (MRK) reported fourth quarter and full-year earnings Tuesday, in line with Wall Street estimates. The bad news: Its stock was down more than 10% in early trading, largely because of weaker ...

Merck on Tuesday missed earnings estimates, lowered its guidance for this year’s earnings, and withdrew a target for sales of its HPV vaccine, Gardasil, to reach $11 billion by 2030. The result ...

Halozyme Therapeutics claims Merck's new Keytruda version infringes on patents, requiring a licensing agreement, reports WSJ.