Our offices in Linz are located in a former factory building which is a fine example of Upper Austria's unique Art Deco heritage. In 1984, the carpenter's workshop of yore was restored to its original beauty, and its interior was revitalized in 2005 to meet today's latest business standards.

About Us

GRASSNER LENZ THEWANGER + PARTNER is registered as a partnership in Linz (Company Register No. FN 140793). We operate out of Linz, with branch offices in Vienna and in Steyr.

Our partnership goes back to the year 1973, when Dr. Alfred Thewanger (who has since passed away) started his legal practice in Linz. In the course of time, associates who had proven themselves over the years and who had gained their seniors‘ trust were awarded a lawfirm partnership. Today, our lawfirm consists of the following four partners, who are personally involved in day-to-day operations and who are individually liable for its success:

  • HELMUT LENZ, Dr. iur.
  • NORBERT MOOSEDER, Dr. iur.,  LL.M.
  • WALTER LÖBL, Dr. iur.


Furthermore, GLTP continuously employs five other (associate) attorneys and a staff of approximately 15.

While our law firm’s main objective is to provide our clients with full-service legal counseling, our lawyers are also highly qualified to meet the growing demand for specialized expert knowledge and tailor-made solutions. In this spirit, clients turning to us with cases to be submitted to local authorities and district courts may expect the same level of commitment and care that we bestow on more complex proceedings involving, for instance, a European Court of Justice.


Sehr geehrte Klienten,

am Freitag, 13.03.2020 gab die österreichische Bundesregierung zahlreiche Maßnahmen zum Schutz der Bevölkerung bekannt. Es ist anzunehmen, dass bald weitere folgen. GLTP ist auf diesen Fall vorbereitet und wurde in den vergangenen Tagen die weitere Vorgangsweise geklärt. Somit ist Ihre rechtliche Betreuung auch in dieser schwierigen Zeit gesichert.

Die Mitarbeiter/innen von GLTP werden je nach Notwendigkeit Ihre Betreuung über Home-Office Arbeitsplätze vornehmen. Besprechungen/Konferenzen können und sollen vorrangig über Telefon oder Video abgehalten werden. Unsere Telefonleitung bleibt offen. Auch Ihre Emails und sonstiger Briefverkehr werden beantwortet bzw. bearbeitet. Die jeweiligen Betreuer stehen Ihnen aber gerne auch bei besonderem Bedarf weiterhin für persönliche Besprechungen zur Verfügung.

Wir vertrauen darauf, Sie mit diesen Maßnahmen auch in dieser schwierigen Situation bestmöglich betreuen zu können.

Sollten Sie Fragen haben, wenden Sie sich bitte vertrauensvoll an Ihren persönlichen Betreuer.

Mit freundlichen Grüßen



Dear Clients,

on Friday, 13 March 2020, the Austrian Federal Government announced numerous measures to protect the population. It is to be expected that more will follow soon. GLTP is well prepared for this case and has taken steps to make sure that, though these may be challenging times, you continue to be provided with our legal support and services.

If need be, employees of GLTP stand ready to advise you from their home workstations, from where they have full access to our company network and database systems. Meetings and conferences can and should be held primarily via telephone or video call. Our telephone line remains open and your e-mails and any other form of correspondence will be answered and dealt with accordingly. Depending on the urgency and in case of special needs, your legal advisor can also agree to meet you in person. We trust that these measures will provide you with the best possible support, given the present circumstances.

Please do not hesitate to contact your trusted legal advisor, should you have any further questions.