Patent Law is yet to be ratified by the Bhutan Government- the Patent protection is by way of cautionary notice. 

– Patent Law under notification from Bhutan Government 

Yes- Patent Law under notification from Bhutan Government

1. A Power of Attorney, simply signed. 
2. One copy of the English specification and claims.
3. One set of the drawings relating to the invention, if any.
4. An abstract of the invention 
5. A deed of assignment signed by the inventor, if the applicant is not the inventor.
6. A certified copy of the application giving the filing date, number and country if the application is to be filed with a priority claim.

Twenty (20) years starting from the filing date, (in case of PCT, starting from the PCT filing date). The term of protection is non-extendable