If anyone is interested you can search TM office here:
US:
Trademark Electronic Search System (TESS)
Canada:
Search - Canadian Trademarks Database - Intellectual property and copyright - Canadian Intellectual Property Office - Innovation, Science and Economic Development Canada
Type in "Golden Knights" and will get the whole history of past expired, current or in progress TM.
Team got the TM for "IC 025. US 022 039. G & S: Clothing, namely, bandanas, beach cover-ups, belts, body suits, boxer shorts, caps, cloth bibs, coats, dresses, footwear, ear muffs, gloves, hats, headbands, hosiery, housecoats, jackets, jerseys, leggings, leotards, mittens, nightshirts, pajamas, pants, rain coats, rain wear, robes, scarves, shirts, shorts, skirts, socks, suits, sun visors, suspenders, sweaters, sweatpants, sweatshirts, swimsuits, swim trunks, t-shirts, ties, toques, underwear, vests, warm-up suits and wristbands"
Opposition is for "IC 041. US 100 101 107. G & S: Entertainment services, namely, professional ice hockey exhibitions"
In Canada, TMs are at "Searched" stage. You can also view London Knights TM there.