Pfizer files second lawsuit to block Novo Nordisk’s $9bn Metsera bid
Novo and Metsera deny Pfizer’s arguments
Novo and Metsera deny Pfizer’s arguments

Improved pitches from both large pharma groups expected to be revealed later on Tuesday

Pharma giant had to pay a blockbuster price to buy Metsera after the biotech prospect spurred an auction with Novo Nordisk

Pfizer had struck deal in September to buy obesity-focused biotech

Fight for Metsera looks like 1980s corporate raider redux

Biotech says it opted for revised offer from US pharma company after rival Novo bid raised antitrust concerns

FTC fast-tracks antitrust approval of earlier deal in sign Washington could weigh in on takeover battle with Novo Nordisk