"45(1) If a provision of a contract made
before the commencement of the Trade Practices
Amendment Act 1977:
(a) is an exclusionary provision; or
(b) has the purpose, or has or is likely to
have the effect, of substantially
lessening competition;
that provision is unenforceable in so far as it
confers rights or benefits or imposes duties or
obligations on a corporation.
(2) A corporation shall not:
...
(b) give effect to a provision of a contract,
arrangement or understanding, whether the
contract or arrangement was made, or the
understanding was arrived at, before or
after the commencement of this section, if
that provision:
(i) ... ; or
(ii) has the purpose, or has or is likely
to have the effect, of substantially
lessening competition."
(3) For the purposes of this section and
section 45A, 'competition', in relation to a
provision of a contract, arrangement or
understanding or of a proposed contract,
arrangement or understanding, means competition
in any market in which a corporation that is a
party to the contract, arrangement or
understanding or would be a party to the
proposed contract, arrangement or understanding,
or any body corporate related to such a
corporation, supplies or acquires, or is likely
to supply or acquire, goods or services or
would, but for the provision, supply or acquire,
or be likely to supply or acquire, goods or services."
(4) For the purposes of the application of
this section in relation to a particular
corporation, a provision of a contract,
arrangement or understanding or of a proposed
contract, arrangement or understanding shall be
deemed to have or to be likely to have the
effect of substantially lessening competition if
that provision and any one or more of the
following provisions, namely -
(a) the other provisions of that
contract, arrangement or
understanding or proposed contract,
arrangement or understanding; and
(b) the provisions of any other
contract, arrangement or
understanding or proposed contract,
arrangement or understanding to
which the corporation or a body
corporate related to the corporation
is or would be a party;
together have or are likely to have that effect."