I can share some insights into these patent matters from my perspective. There are many loopholes regarding what patents are applied for; it really comes down to the specific wording. It might only be a manufacturing method, as patents aren’t granted for everything. Semaglutide itself is not necessarily entitled to a patent.
A patent held by the company I represent was also challenged a while ago. The challenging company is significantly larger and is trying to use “war of attrition” tactics to have the patent overturned or circumvented. By disputing the patent, you enter a gray area regarding where a competing product can or cannot be sold. These are not straightforward processes when they go through the legal system.