Our Litigators of the Week are Paul, Weiss, Rifkind, Wharton & Garrison partners Andrew Gordon and Jaren Elizabeth Janghorbani for their high-stakes win in a case that fills in a newly uncertain area of the law: When can a company walk away from a pending merger without penalty?

Almost exactly a year ago, Paul Weiss partner Lewis Clayton won Litigator of the Week for representing Fresenius SE & Co. in a landmark case in Delaware. Clayton’s client had agreed to acquire Akorn, an American generic pharmaceutical manufacturer, for $4.75 billion, only to discover substantial evidence that Akorn was violating FDA rules and regulations.