Yeah. Some patents have expired, although Barnsley's most recent one is 2004, which appears to be a more abstract technology for the exploration of higher-order fractal manifolds (possible terminology fail there, but the pdf link below lays it out clearly):

https://www.google.com/search?tbm=pts&hl=en&q=barnsley+fract...

https://www.google.com/patents/WO2004081876A1?cl=en&dq=barns...

http://arxiv.org/pdf/math/0312314v1.pdf

If I'm reading this right (but I'm no patent lawyer), Barnsley et al's most recent patent on image compression dates from 1995 and expires next summer: https://www.google.com/patents/US5867603?dq=barnsley+fractal...