Hugin v Commission (1979)

V narrow definition of product market.
Commission held Hugin in breach of Article 86 (now 81)
by refusing to supply spare parts for its cash registers to Liptons, who
competed with Hugin in servicing Hugin machines.
Commission defined relevant market as spare parts for
Hugin machines which were needed by independent repairers.
Hugin argued proper market was cash registers in general,
which was v competitive.
ECJ found users of cash registers would require
specialist to service machines.
Specific demand for Hugin spare parts – not
interchangeable with spare parts of other makes.
Therefore Hugin occupies dominant position.
[Problem with reasoning here is that knowledge repairs
might be expensive might be taken into account in main market – ie something
consumer would take into account when buying cash register.]