304._)

An assignment to assign future patents, in consideration of the
assignee's paying the expense of taking them out, is broken by his
refusal to pay for and take out a particular patent when requested, and
a subsequent assignment to another conveys a perfect title. (_Buck_ vs.
_Timony, 78 Fed. Rep., 487._)

Any assignment which does not convey to the assignee the entire and
unqualified monopoly which the patentee holds in the territory
specified, or an undivided interest in the entire _monopoly,_ is a mere
license. (_Sanford_ vs. _Messer, 2 O. G., 470._)

When a party does license, grant, and convey any invention which he may
hereafter make, this gives only an equitable right to have an assignment
made, and this right may be defeated by assignment of the patent to a
purchaser for value without notice of this equity. (_Regan Vapor Engine
Co._ vs. _Pacific Gas Engine Co. (Nineth Cir.), 7 U. S., App., 73._)

[Sidenote: Territorial Grants.]

A territorial grantee cannot be restrained from advertising and selling
within his territory, even though the purchasers may take the patented
article outside the vendor's territory. (_Hatch_ vs. _Hall, 22 Fed.
Rep., 483._)

One who buys patented articles of manufacture from an assignee for a
specified territory becomes possessed of an absolute property in such
articles, unrestricted in time or place. (_U. S. S. C., Keller et al._
vs. _Standard Folding Bed Co., 71 O. G., 451._)

The sale of a patented machine by one authorized to sell, conveys the
whole ownership to the purchaser, who may sell it again to another.
(_Morgan Envelope Co._ vs. _Albany Perforated Wrapping Paper Co., 152 U.
S. 425._)

[Sidenote: Licenses.]

Every person who pays the patentee for a license to use his process
becomes the owner of the product, and may sell it to whom he pleases, or
apply it to any purpose, unless he binds himself by covenants to
restrict his rights of making and vending certain articles that may
interfere with the special business of some other licensee. (_Met.
Washing Machine Co._ vs. _Earl, 2 Fish., 203; 2 Wall., Jr., 230._)

A license is not forfeitable for non-payment of royalties in the absence
of express provisions to that effect. (_Wagner Typewriter Co._ vs.
_Watkins, 84 Fed. Rep., 57; 1898._)

A shop right is a personal license and is not assignable. (_Gibbs_ vs.
_Hoefner, 19 Fed. Rep., 323; 22 Blatch., 36._)

A license to a person to use an invention only "at his ow