SK Bioscience has won the second trial of its patent infringement lawsuit against Pfizer over its pneumococcal vaccine, overturning the ruling made in the first trial. 

The two companies have been engaged in a long-running lawsuit over SK Bioscience's 13-valent pneumococcal vaccine, ‘Skypheumo Prefilled Syringe (Skypheumo).’

According to the pharmaceutical industry on the 3rd, the patent court recently ruled in favor of the plaintiffs in the appeal of SK Bioscience's patent infringement lawsuit against Pfizer and Wyeth LLC. 

The two companies' conflict over Skypheumo dates back to 2017. Wyeth, the Korean patent holder for the pneumococcal vaccine