1. Infringement of intellectual property rights can be defined in a variety of ways, which can be defined by special laws such as copyright law and patent law, to see whether it is infringement or not, and generally whether it constitutes the following requirements: (1) Without the permission of the obligee; (2) Carry out profit-making activities (expressed as "for the purpose of production and operation"); (3) Damaging the lawful rights and interests of the intellectual property owner.

2. Generally speaking, if the above elements constitute at the same time, the infringement will be identified, but the details of identification generally depend on the special law. For the example you cited, the trademark law will apply.

3. There are three kinds of infringement acts stipulated in the Trademark Law: (1) using the same trademark on the same commodity without the permission of the registered trademark owner, and the circumstances are serious and constitute a crime; (two) the sale of goods that are knowingly counterfeit registered trademarks, and the sales amount is relatively large, which constitutes a crime; (3) As well as the crime of forging infringement of intellectual property rights, the crime of making another person's registered trademark logo without authorization, or the crime of selling forged or made registered trademark logo without authorization, if the circumstances are serious enough to constitute a crime.

Your behavior obviously doesn't apply to any of the above infringements. In short, your behavior is actually just a disposal of your own property, not for profit, without harming Nike's original interests or causing any interference to the market order. It can't be identified as infringement.