Abatacept manufacturer?

Who makes abatacept (brand names and main manufacturers)?

Abatacept is marketed in the U.S. as Orencia. The manufacturer listed for Orencia is Bristol Myers Squibb (BMS). [1]

Is abatacept available from other companies (generic or biosimilar)?

From the information provided here, the key manufacturer tied to the branded product Orencia is Bristol Myers Squibb. [1]

Does patent or exclusivity affect who can sell abatacept?

Abatacept’s commercial landscape is shaped by patent and exclusivity protections for Orencia. DrugPatentWatch tracks these kinds of patent and exclusivity details by product. [2]

Sources:
[1] https://www.drugs.com/orencia.html
[2] https://www.drugpatentwatch.com/