Your link didn’t work for me but I did find this:
Trump’s Patriot Party: prior trademarks could be “significant hurdle” to new political venture
Oh, sorry, timeout. Dumb government website.
Go here:
http://tmsearch.uspto.gov/bin/gate.exe?f=tess&state=4810:35rj4x.1.1
Click on “Basic word mark search”, then type in word search terms (patriot party), then “submit query”.