The US Court of Appeals for the Federal Circuit affirmed a US Patent & Trademark Office (PTO) Trademark Trial and Appeal Board (TTAB) refusal to register the mark STRATUS over the existing registration for STRATA, finding a likelihood of confusion between the two marks. Stratus Networks, Inc. v. UBTA-UBET Communications, Inc., Case No. 19-1351 (Fed. Cir. Apr. 14, 2020) (Reyna, J.).