The lawsuit, filed by attorney Carlos Ernesto González, a partner in the law firm, was filed on behalf of Enrique Jelenszky and his partner, John Winstanley, who have been in a relationship for 17 years.
Jelenszky, a Panamanian lawyer, and Winstanley, a British executive, held a civil union ceremony in May 2008 at the Embassy of the United Kingdom in Panama.
Eight years later, and in accordance with the law of couples from the United Kingdom, the union became a marriage.
This year, Jelenszky requested the marriage be recorded in Panama, using the same process other couples use to have their marriages from other countries recorded in Panama.
However, the Civil Records Office in September refused to register their marriage. Jelenszky then decided to appeal the decision to the Supreme Court.
The case, which was admitted in early November, is expected to generate a large amount of controversy.
Yesterday afternoon, a group of about 10 people, who are opposed to this request, conducted a vigil "in defense of family values" on the steps of the court.