Русско-англо-русский юридический словарь

A party or the legal representative of a party, on behalf of and upon the instructions of that party, may communicate information relating to the proceedings to any person where necessary to enable that party [...] (legislation.gov.uk)

The application was made in bad faith because: Mr Blatchly worked for Kahuna and knew that the trade mark the subject of these proceedings was designed on behalf of, and upon instructions from, Kahuna. (Trade Marks Act 1994)

We write on behalf of and upon instructions of the abovementioned clients (hereinafter referred to as "our Clients") and serve upon the following notice: [...] (Notice on Behalf of NDTV)

A data processor is an entity that processes personal data on behalf of and on instructions from a data controller. (Does the GDPR Apply to My Business? - Flowchart from Penningtons Manches Cooper LLP)

Taking an authoritative position on these issues, Belarus intends to present during this session of the General Assembly, on behalf of and on the instructions of the states of Commonwealth of Independent States, a joint declaration of the CIS on issues of the non-proliferation of weapons of mass destruction and their delivery systems. (Interpretation: Techniques and Exercises by James Nolan)

On legal documents, you often see, "signed XYZ for and on behalf of ." This is because for and on behalf of mean different things.

'Can I sign for my friend?' = Can I sign in place of/as a substitute for my friend? 'Can I sign on behalf of my friend?' = Can I sign as the agent of my friend? (i.e., "and the implications will be as if he signed it.) (WordReference.com)