56As regards, specifically, the existence of a right guaranteed by EU law within the meaning of the first paragraph of Article 47 of the Charter, it should be borne in mind that, according to settled case-law, protection against arbitrary or disproportionate intervention by public authorities in the sphere of the private activities of any natural or legal person constitutes a general principle of EU law. That protection may be invoked by a relevant person in respect of a measure adversely affecting him (see, to that effect, judgment of 16 May 2017, Berlioz Investment Fund, C‑682/15, EU:C:2017:373, paragraphs 51 and 52).
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