49Thus, it follows from the case-law of the Court that the inapplicability of a technical regulation which has not been notified in accordance with Article 8 of Directive 83/189 can be invoked in proceedings between individuals for the reasons set out in paragraphs 40 to 43 of this judgment. The same applies to noncompliance with the obligations laid down by Article 9 of the same directive, and there is no reason, in that connection, to treat disputes between individuals relating to unfair competition, as in the CIA Security case, differently from disputes between individuals concerning contractual rights and obligations, as in the main proceedings.
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