(1/3) FAMILY BUSINESS owes the design and all the rights to produce, reproduce and distribute;
Take Carl Hansen & son as an example, almost 70% of designs are from Hans J Wegner; While Artek, almost 90% of the designs are from Alvar Aalto, Aino Aalto and Elissa Aalto with their production in the A-Factory Finland and outsourcing the lighting and accessories fabrication to other countries.
(2/3) CONTEMPORARY COLLABORATIONS
Brands work with studios to design, produce and launch the designs with the name of the designers under the name of the brand.
In most cases, designers and brands do have regular collaborations, which some would contribute in most of the collections within certain period; to name a few, Gamfratesi with GUBI, Norm Architects with Menu, Anderssen & Voll and Cecilie Manz with Muuto, etc.
All designs have their owner. If the designer passed away, production and distribution right have to be authenticated from the family/ association within the first 80 years.
That is why you can find Verner Panton's designs not only in Verpan, but some in Vitra and Montana.
Apart from enriching the diversity, designs from the mid-century are being widely relaunched these years, e.g. collections from Marcel Gascoin, Joe Colombo, Bill Curry, Greta M. Grossman, Illum Wikkelsø, Tove Kindt-Larsen at GUBI, collections from Ib Kofod-Larsen at Menu, etc.
In some cases, distribution and production rights of certain designs are divided according to areas and countries; like Charles and Ray Eames, Isamu Noguchi with Vitra and Herman Miller.