Dictionary.com
definitions

patentor

[pat-n-ter, pat-n-tawr or, esp. British, peyt-, peyt-]
noun
  1. a person or official agency that grants patents.

Origin of patentor

First recorded in 1885–90; patent + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for patentor

patentor

noun
  1. a person who or official body that grants a patent or patents
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012