2023
"They are highly committed to their work, punctual, reliable and able to see the details as well as the big picture. I also very much appreciated their proactive approach; we could fully trust that they were always a few steps ahead, anticipating questions and future needs, taking action and advising us at all stages to make sure we were full prepared."
"We value their speed, success rate and availability."
"They are competent, reliable, quick and very friendly."
"They are straight to the point, very friendly and very reliable. The team has very high experience and knowledge on patent issues."
"We appreciate their local knowledge and European experience – they have several European patent attorneys that can substitute for each other. The firm has a balanced age structure of senior patent attorneys, younger patent attorneys and candidates to cost-efficiently contribute to project goals. There is a quick turnaround of requests and proactive advice."
"We have one contact for all our IP matters. Dr. Fabian Stanke not only takes excellent care of us, he also knows our company and our intellectual property in detail, which makes it much easier to bring in new intellectual property. We can rely on Sonn and in particular on Dr. Stanke 100%. In his absence, Sonn's team also does its job to our complete satisfaction."
"We value their experience, availability and responsiveness."
2022 client testimonials
"We have had very good experience and results with Sonn & Partner."
"A very competent, friendly service."
2021 client testimonials
A loyal client said: “Due to the fruitful and successful cooperation in the last decade, we appreciate Sonn & Partner very much. They give swift feedback and have a wide international network which is helpful for us.”
Another client said: “We can rely 100 percent on Sonn & Partner. The error rate is almost zero, in other words, excellent. They work in a highly professional, friendly, and reliable manner.”
2019 client testimonials
A client says the firm is “number 1 in Austria” and commended its “rapid response and exceptional arguments before the European and Austrian Patent Offices”. The client also described the firm’s practitioners as “warm and personable” and values the firm’s “great results and price point”.
A biotechnology patent client said the firm delivers “great prosecution and exceptional opposition” services. “I was treated like a king,” the client noted, adding: “I obtained better than expected results at a very reasonable price and I like the lawyers.”
