On December 29th, 2000 lawyer Gregorio Hairabedian, with the support of his counsel and daughter Dr. Luisa S. Hairabedian, began a case pursuing the right to the truth of the Armenian Genocide relative to the search of the truth and the fight against the impunity of the genocide against the Armenians by the state of Turkey from 1915 to 1923 of which specifically were constituents of the victim’s paternal and maternal families during that time in the Palu and Zeitoun vilayets respectively.

After appealing a decision against the first instance, the National Clearinghouse for Criminal and Correctional office ordered the Court of First Instance to conduct an investigation as part of what has been called «The Trials in Search of the Truth» or «The Truth Trials».

After the numerous diligent processes, on October 23rd 2002, the Federal Court no. 5, Ministry no. 10 headed by Dr. Oyabide issued a resolution that most pertinently said: «On the 23rd of October 2002 Buenos Aires… Resolves:… 2) To solicit the Turkish Government through the Ministry of Foreign Affairs, International Trade, and the Cult of the Nation and that through the preceding methods: a) a detailed report on the fate of the paternal and maternal families of Gregorio Hairabedian, mentioned in fs. 22/23, in Palu (Jarput) and Zeitun (Soulemainy), during the proceedings that took place between 1915 and 1923; b) Make available the archives that are relevant to the subject matter and to the relatives of the claimant through disappearance, deportation and execution. 3) To solicit the governments of Great Britain, The United States of America, Germany and Vatican City to give all of their archives relevant to the events that occurred in Turkey between 1915 and 1923, in the vilayets of Trebizond, Erzerúm, Bitlis, Diarbekir, Jarput and Sivas, and relevant to the family of the claimant. 4) To solicit the United Nations Department of Information to come forward with the following document: ECN.4 sub. 2 1985 6 named «The Updated and Revised Report on the Question of Prevention and Punishment of the Crime of Genocide» prepared by Ben Whitaker and approved in the 38th session, Item 4 of the provisional agenda of the United Nations of August 1985 and an authentic copy of the minutes of the 38th session, Item 4 of the provisional agenda of the United Nations… Recorded and notified. Signed: Dr. Norberto M. Oyarbide, Federal Judge.»

Subsequently, the Tribunal ordered the Argentine Chancellery to continue to pursue the corresponding International Exhorts the were promptly based in the aforementioned countries.
German and the Holy See consequently responded by informing that the historical and political archives were available to the solicitors. In August 2004, Dr. Luisa Hairabedian visited Europe and successfully gained access to the Political Archives of the German Minister of Foreign Affairs. During the trip Hairabedian met with distinct experts of international prestige in the field of International Human Rights, and with a number of representatives in the Armenian community in France and Germany in efforts to strengthen international support for the cause.

It is important to highlight that the original presented allegations initially filed in solitude by Gregorio Hairabedian and have been presented in a similar framework to those of the «class action» as claimants of the case have expanded to include groups within the Armenian Community in Buenos Aires. These organisations include: The Administrative Institution of the Armenian Church, The Armenian Cultural Association, The Argentinean-Armenian Chamber of Industry and Commerce, The Armenian Cultural Union, The Armenian Compatriot Union of Marash and The Tekeyan Cultural Association, and the Union of Armenian of Hadjin Residents.

Dr. Luisa Hairabedian passed in a traffic accident On October 24th 2004. In response, her family founded the Luisa Hairabedian Foundation in 2005 with the goal of establishing a structure to permit the continuation of the search for evidence for the Truth Trials and also to pursue the promotion of human rights, a mission Luisa Hairabedian carried throughout her life.
The primary principle of the Luisa Hairabedian Foundation was to promote and defend human rights in general and particularly to pursue the trial for the Right to the Truth that Dr. Luisa Hairabedian was dedicated to and initiated with her father in 2001.

After the passing of Luisa, in efforts to continue her legacy, the distinct members of the foundation, especially her son Federico Gaitan Hairabedian, a law student at the time, proposed to continue gathering evidence as his mother started in 2004. Gregorio Hairabedian, President of the Luisa Hairabedian Foundation, made possible trips to distinct countries throughout Europe, Asia and to the United States with the objective of obtaining government documents that for certain reasons the states had not made available as the court decision made in 10.23.02 demanded for and was mandated by the aforementioned Dr. Oyarbide.

Through certain trips during the years of 2005-2010, they successfully obtained valuable classified government documents from the United States, France, Germany, England, Holy See, Belgium, Armenia and Jerusalem that were then translated to Spanish. The documents contained elements of evidentiary validity sufficient enough to be presented in the Truth Trials and were legalized. These documents included diplomatic letters, classified reports, witness testimonies, orders, among others, resulting in a unique archive that clearly documents the crimes committed by the Turkish State against the Armenian population from 1915 to 1923.

Distinct specialist and collaborators like the prestigious historian Pascual Ohanian and lawyer Mariela Bondar traveled to the United States, Armenian and the Vatican City in search for evidence. A commision of historiographers formed part of the Luisa Hairabedian Foundation and led a detailed investigation of the incriminating evidence of the German State.