“Whereas His Most Gracious Majesty King George the Third, by Letters Patent bearing date at Westminster the Seventeenth day of March now last past, did give and grant unto me, the said William Cookworthy, my executors, administrators, and assigns, his especial license, full power, sole privilege and authority, that I, the said William Cookworthy, my executors, administrators, and assigns, and every of us, by myself and themselves, and by mine and their deputy or deputys, servants or agents, or such others as I, the said William Cookworthy, my executors, administrators, or assigns, should at any time agree with, and no others, from time to time, and at all times thereafter during the term of years therein expressed, should and lawfully might make, use, exercise, and vend ‘A KIND OF PORCELLAIN NEWLY INVENTED BY ME, COMPOS’D OF MOOR-STONE OR GROWAN, AND GROWAN CLAY,’ within that part of His Majesty’s kingdom of Great Britain called England, his dominion of Wales, and town of Berwick-upon-Tweed, in such manner as to me, the said William Cookworthy, my executors, administrators, and assigns, or any of us, should in our discretion seem meet, and that I, the said William Cookworthy, my executors, administrators, and assigns, should and lawfully might have and enjoy the whole profit, benefit, commodity, and advantage from time to time coming, growing, accruing, and arising by reason of the said invention, for and during the term of years therein mentioned, to have, hold, exercise, and enjoy the said license, powers, privileges, and advantages thereinbefore granted unto me, the said William Cookworthy, my executors, administrators, and assigns, for and during and unto the full end and term of fourteen years from the date of the said Letters Patent, next and immediately ensuing, and fully to be compleat and ended according to the statute in such case made and provided; in which said Letters Patent there is contained a provisoe as or to the effect following (viz.), that if I, the said William Cookworthy, should not particularly describe and ascertain the nature of my said invention, and in what manner the same was to be performed, by an instrument in writing under my hand and seal, and cause the same to be inrolled in His Majesty’s High Court of Chancery within four calendar months next and immediately after the date of the said Letters Patent; that then the said Letters Patent and all libertys and advantages whatsoever thereby granted should utterly cease, determine, and become void, as in and by the said Letters Patent (relation being thereunto had) more fully and at large it doth and may appear.