Pfizer Sues Novo Nordisk in Epic Bidding War Over Obesity Biotech Metsera (2025)

Pfizer's Legal Battle Against Novo Nordisk and Metsera: A Bidding War Over Obesity Biotech

In a dramatic turn of events, Pfizer has filed a second lawsuit against Novo Nordisk and Metsera, accusing the Danish drugmaker of engaging in anticompetitive practices in the bidding war over obesity biotech. The lawsuit, filed in the U.S. District Court in Delaware, highlights Pfizer's concerns about Novo Nordisk's proposed acquisition of Metsera, which could potentially eliminate a smaller competitor in the blockbuster obesity market.

According to the lawsuit, Pfizer argues that the acquisition would solidify Novo Nordisk's dominant position in the weight loss drug market, particularly with the success of Ozempic and Wegovy. This move could significantly impact the competitive landscape, as Pfizer aims to establish its own presence in the obesity space. The lawsuit also suggests that Metsera's controlling shareholders have conspired with Novo Nordisk, further intensifying the legal battle.

Metsera, in response, issued a statement denying Pfizer's claims, stating that the company is trying to 'litigate its way to buying Metsera for a lower price.' They also challenged Pfizer's arguments as 'nonsense' and vowed to address them in court.

This legal dispute marks an escalation in the heated standoff between Pfizer and Novo Nordisk over Metsera. Pfizer initially proposed an acquisition of Metsera for $4.9 billion, with potential future payments reaching up to $7.3 billion. However, Novo Nordisk's takeover bid, valuing Metsera at around $6 billion, triggered a renegotiation deadline. Pfizer's first lawsuit, filed in the Delaware Court of Chancery, sought to block Novo Nordisk's attempt to terminate the existing merger deal, citing significant regulatory risks.

The obesity biotech market has been a highly competitive space, with Novo Nordisk's GLP-1 drugs, including Ozempic and Wegovy, establishing a strong presence. Yet, the company has faced challenges in maintaining its leading position, with Eli Lilly emerging as a rival. Pfizer's legal actions underscore the intense competition and the potential consequences of acquiring Metsera, which could shape the future of the obesity drug market.

Pfizer Sues Novo Nordisk in Epic Bidding War Over Obesity Biotech Metsera (2025)

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