An activist detained in Hong Kong partially won his final appeal Tuesday seeking recognition for same-sex marriage registered overseas, in a landmark court ruling that is likely to have a far-reaching impact on the city’s LGBTQ+ community.

Jimmy Sham, a prominent pro-democracy activist during 2019 anti-government protests, married his husband in New York 10 years ago. Sham first asked for a judicial review in 2018 arguing that Hong Kong’s laws, which don’t recognize foreign same-sex marriage, violate the constitutional right to equality. The lower courts had dismissed his challenges.

Sham has been in custody after being charged under a Beijing-imposed national security law following the massive protests. The law has been used to arrest and silence many other pro-democracy activists as part of a crackdown on dissent in the former British colony.

Judges at the city’s top court, by a majority, declared in a written ruling that the government is in violation of its positive obligation to establish an alternative framework for legal recognition of same-sex partnerships, such as registered civil partnerships or civil unions. But they unanimously dismissed his appeal on other grounds.

Their ruling will have strong implications for the lives of the LGBTQ+ community and the financial hub’s reputation as an inclusive place to stay and work.

Currently, Hong Kong only recognizes same-sex marriage for certain purposes such as taxation, civil service benefits and dependent visas. Many of the government’s concessions were won through legal challenges in recent years and the city has seen a growing social acceptance toward same-sex marriage.