Peroni Sosa Tellechea Burt & Narvaja

The firm was founded in 1968 by Dr. Guillermo F. Peroni and Dr. Demetrio Ayala. In 1973 it began publishing the legal review La Ley Paraguaya, the first Paraguayan legal review devoted to jurisprudence, legislation and national doctrine. La Ley was published under the direction of Dr. Juan Guillermo Peroni, in cooperation with the Argentine legal review La Ley, a collaborative effort continuing to this date, where LA LEY PARAGUAY S.A. is the branch of multinational Thompson Reuters in Paraguay. Mr. Guillermo F. Peroni is current Chairman of La Ley S.A. and several of the firm’s lawyers contribute with publications in La Ley, preparing articles on areas of their expertise.

In 1997 new partners were incorporated, the firm changed its name to PERONI SOSA TELLECHEA BURT & NARVAJA (PSTBN), and new partners entered the firm. Currently PSTBN has 25 lawyers and a staff of approximately 30 people. PSTBN is a member of the prestigious international networks Lex Mundi, Club de Abogados Iberoamericano, Meritas and Grupo Iberoamericano para la Practica de Compliance.
PSTBN offers a wide variety of legal services in Paraguay for international and local business. It specializes in corporate law, banking and finance operations, litigation and arbitration, mineral-related investment projects, telecommunications, hydrocarbon exploration, foreign investment, maritime and aeronautical law, as well as representation and advisory services in civil, commercial, labor, tax issues and legal advice in public procurement and intellectual property, among other practice areas.

PSTBN represents important national and international companies with business activities in Paraguay. The firm provides advisory services in a variety of commercial areas, including the establishment of corporations and other types of businesses. The firm drafts and negotiates commercial contracts at the national and international levels, and represents buyers and sellers in mergers and acquisitions. PSTBN represents local companies in their international commercial transactions, as well as foreign clients in their efforts to establish businesses in Paraguay, including the opening of branch offices and subsidiaries, and joint ventures. The firm has advised clients in the establishment of industrial and agri-business joint ventures with foreign investors, and is highly regarded for its role in the granting of the first mid-term loan in Euros in Paraguay, awarded to a private Paraguayan firm without a bank guarantee, as well as the purchase of the entire operation of an important local industrial firm by a U.S. company.

Publications-Peroni Sosa Tellechea Burt & Narvaja


Practice Areas

  • Corporate / Commercial
  • Regulatory compliance law
  • Litigation and Dispute resolution
  • Banking and Finance
  • Tax law
  • Foreign investment projects
  • Agency, Distribution and Representation
  • Intellectual property
  • Agribusiness
  • Telecommunications law
  • Exploration of natural resources and Hydrocarbons
  • Sports law
  • Insurance law
  • Labor law and Social security
  • Real estate and Hotel investment

Contact Peroni Sosa Tellechea Burt & Narvaja

Peroni Sosa Tellechea Burt & Narvaja

Phone: +595 21 319 9000
Fax: +595 21 319 9000
Address: Eulogio Estigarribia 4846. Asunción 1892