You can get a trademark through marked use (TM) or by registering it (R) with the patent and trademark office. The Big 12 filed for and then abandoned applications for "Big 14" (see: http://tmsearch.uspto.gov/bin/showfield?f=toc&state=4802:7gdi3.1.1&p_search=searchss&p_L=50&BackReference=&p_plural=yes&p_s_PARA1=&p_tagrepl~:=PARA1$LD&expr=PARA1 AND PARA2&p_s_PARA2=Big 14&p_tagrepl~:=PARA2$COMB&p_op_ALL=AND&a_default=search&a_search=Submit Query&a_search=Submit Query). There is no record of them filing for Big 16. So, unless they've used and marked them in public documents, they have no claim to either name.I believe they are both held by The Big 12-2.
You can get a trademark through marked use (TM) or by registering it (R) with the patent and trademark office. The Big 12 filed for and then abandoned applications for "Big 14" (see: http://tmsearch.uspto.gov/bin/showfield?f=toc&state=4802:7gdi3.1.1&p_search=searchss&p_L=50&BackReference=&p_plural=yes&p_s_PARA1=&p_tagrepl~:=PARA1$LD&expr=PARA1 AND PARA2&p_s_PARA2=Big 14&p_tagrepl~:=PARA2$COMB&p_op_ALL=AND&a_default=search&a_search=Submit Query&a_search=Submit Query). There is no record of them filing for Big 16. So, unless they've used and marked them in public documents, they have no claim to either name.
Or Big 14, for that matter.
Who owns the trademarks? How does one find out?