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Intellectual Property

Our commitment to constant innovation has earned us a great reputation among our loyal fans (that's you!), and a number of patents and trademarks. This also means that our lawyers are making us write this page to describe our intellectual property. It's pretty dry stuff, but go ahead and read it if you like. Us? We're gonna put on another pot of coffee and get back to work making great phone cases.

Silk's products have been recognized with active and/or pending trademarks and patents issued by the United States Patent and Trademark Office, as well as Patent and Trademark Offices abroad. Silk is dedicated to exercise our right to defend our intellectual Silk by diligently enforcing our patents and trademarks. The virtual marking list below may not be exhaustive, and additional patents, pending patents, and trademarks may protect Silk products in the US and/or internationally.

When using the marks in publications for distribution only in the United States, include the appropriate ™ or ® symbol on first use. For publications distributed outside the United States, do not include trademark symbols. Please use the following trademark credit notice: The Silk name and Silk trademarks are the property of Catalyst Medium Four, Inc., registered in the U.S.

The Silk family of products is covered by one or more of the following patents and pending patents, and trademarks:


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Q Card Case


US 13/357,499
US 29/461,635
US 29/510,985
US 29/574,844
US 29/574,843
US 29/565,938
US D721689
US 8,504,127
US 29/574,846
US 29/574,847
US 29/579,304
US 29/579,309
US 29/582,372
US 29/582,373
US 62411875
US 62/442,172
CA 171598
CA 171600
CA 171604
CA 171601
CA 171603
CA 171602
CA 171599
CA 171597
CN 201630556398.7
CN 201630556470.6
CN 201630556357.8
UK 003515527-0001
UK 003515527-0002
UK 003515527-0003
UK 003515527-0004
UK 003515527-0005
UK 003515527-0006
UK 003515527-0007
UK 003515527-0008

US patent number 8,381,904.