General Patent Corporation International
General Patent Corporation
IP Holdings LLC

Leighton Technologies LLC was formed for the purposes of enforcing a portfolio of patents relating to the fabrication of plastic cards, such as credit cards or ID cards, with embedded computer chips.

These patents include U.S. Patent Nos. 5,817,207; 6,036,099; 6,214,155; 6,441,736; 6,514,367; and 6,557,766. There is one reissue application pending for U.S. Patent No. 6,441,736.

Leighton Technologies is a portfolio company of IP Holdings LLC, and the enforcement campaign for the Leighton patents is being conducted by General Patent Corporation International, which offers patent enforcement on a contingency basis.