It seems that Future Fruit is very busy patenting many kinds of plants, icnluding this one. They have patented the Red Clemenules, IIRC some time ago. Plant Patent lasts 20 years.
Mandarin tree named Late Seedless Mandarin
Assigned to Future Fruit, LLC
Patent Claims
What is claimed is:
1. A new and distinct variety of a seedless mandarin tree as described and illustrated called Late Seedless Mandarin that is characterized as a triploid having late fruit production from about late March through to about mid May in the citrus areas of Sicily, Italy and Riverside, Calif., the trees coming into bearing by year 3 with seedless fruit having a typically mandarin flattened round shape, an average juice content at harvest of about 45% to about 60% with smooth skin texture, and having acceptable rind thickness, acid-sugar ratios, color and pulp eating quality.
http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2FPP18520