The UDRP ("Uniform Domain Name Dispute Resolution Policy" - the arbitration process all domain name disputes go through - you have little choice as mandated by ICANN for all domain name registrars) has been hopelessly broken in favor of the pursuer for a long time. It's a pursuer pays system; surprise surprise pursuers almost always win. UDRP panels are run by private firms of typically retired judges looking to cash in for easy work, selected by WIPO ("World Intellectual Property Organisation") . WIPO love the UDRP, because for the first time its given them real teeth to enforce something directly. Similarly, if you don't respond to a UDRP notification the case is almost always decided against you and you lose control of the domain, regardless of the merits of the case.
If you want to look up some really terrible UDRP decisions regarding things that can't typically be trademarked under almost all legal systems (place and family names etc), the barcelona.com case is pretty famous. Same too with mcdonalds.com. Nissan.com is just another example sadly.
There have even been UDRP cases where the panel has claimed using WHOIS anonymization was an "act of bad faith" and handed the domain to the pursuer. It's a wild system.
> https://www.icann.org/resources/pages/help/dndr/udrp-en
> https://www.icann.org/resources/pages/policy-2012-02-25-en