I've recently been organizing the lodgement of a patent application in Chile.
These days many countries either don't require a Power of Attorney for a patent filing or if they do then a ed, or scanned and emailed, copy of the power signed by the applicant will do.
In case you're wondering, a Power of Attorney is a legal requirement of the country in question. It's to formally empower the local patent attorney to represent the applicant before the particular country's Patent Office.
You'll appreciate the reasoning behind this. It's simply that without a Power being on file the Patent Office can't be sure that the attorney has actually been authorised by the applicant. A few months previously I'd been involved with legalization of a Power of Attorney for the United Arab Emirates. That involved a notary public, the Australian Department of Foreign Affairs and Trade (DFAT) and the UAE embassy in Canberra, to which a fee of about $1200 had to be paid.