The reference site for the registration of brand names is: https://www.inpi.fr/fr/base-marques
In its "Consumer Data" offer, OpenHealth proposes as standard the qualification "Brands" for all products sold in pharmacies. You can of course modify this qualification at any time in your HUB applications.
It is possible in some cases to have products assigned to the same brand (field "Brands") but that they are respectively assigned to 2 companies:
The same brand name (homonym) used by several companies.
A brand that has just been bought by a company. In which case, at a given moment, some products of the same brand can be assigned to 2 companies
Case of a modification made by you on the "Companies" field for some products and not others, which were "initially" assigned to the same brand