Allergan obtains patent: “Artificial tears and therapeutic uses”

November 21, 2017: Allergan, Inc. of Irvine, CA, obtained U.S. Patent No. 9,821,020, “Artificial tears and therapeutic uses”.

According to the abstract of the patent:

The present invention provides ophthalmic compositions, e.g. artificial tears, suitable for treating dry eye syndrome in a human or other mammal suffering there from, e.g. a dog or cat, which comprise a mixture of castor oil with another oil, e.g. a food oil, e.g. olive oil, sesame oil, corn oil etc.

Claim 1 of the issued patent recites:

1. A composition for effectively treating dry eye in an animal or human in need thereof, the composition comprising therapeutically effective amounts of:
an oil mixture consisting essentially of linseed oil and castor oil;
carboxymethyl cellulose;
polysorbate 80;
crosslinked copolymers of acrylic acid and C10-C30 alkyl acrylate;
polyoxyl stearate;
boric acid; and
wherein said composition is an emulsion.

The patent may be viewed at the USPTO website at