Individual or legal entity under private or public law, or a group of such persons or entities, which supplies goods, work or services or which applies to participate in a public tender, the delegation of a public task or the granting of a concession.
([Agreement between the European Community and the Swiss Confederation on certain aspects of government procurement\s, 2002 23.11.2017.](http://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1448431482947&uri=CELEX:22002A0430%2806%29))
Federal Act on Public Procurement, SR [172.056.1](https://www.bkb.admin.ch/dam/bkb/it/dokumente/Oeffentliches_Beschaffungswesen/Revision_Beschaffungsrecht/Federal%20Act%20on%20Public%20Procurement%20%28PPA%29.pdf.download.pdf/Federal%20Act%20on%20Public%20Procurement%20%28PPA%29.pdf), 21.6.2019 (28.8.2020).