Tobias is a leading expert in the field of intellectual property law, and specially trademark and design. He regularly advises multinationals and foreign counsel on IP issues in the Netherlands. Besides trademark and trademark protection, these issues also include copyright, database and know-how protection. Tobias is also a renowned litigator, appearing before all national courts, as well as OHIM and the EU Court of Justice. Tobias is admitted to the Supreme Court bar.

He has also been involved in most of the landmark IP decisions of the Netherlands Supreme Court in the past five years.

Recent work includes advising and litigating on behalf of 

• the world’s two largest producers of fast-moving consumer goods
• a major player in the soft drinks market
• one of the world’s largest chemical companies
• several major fashion brands
• a well-known chip manufacturer
• the largest Dutch telecom operator
• music publishers and organisations repesenting the music industry.

Recent landmark cases include the protection of copyright protection for smells (perfumes) and on testimony, liability of auction sites and the trademark protection of sounds. Tobias is the primary author of the handbook European Trademark Law and is professor of intellectual property law at Erasmus University in Rotterdam.      

Chambers ranks Tobias in Band 1 and adds that De Brauw is "the number-one IP firm in the Netherlands", providing a "top-quality team" that does "outstanding international work", "practical and business-savvy and a commanding figure in the IP sector". Legal 500 states: 'De Brauw Blackstone Westbroek is an outstanding law firm for IP matters and is reliable in terms of strategy, and has extraordinary technical leverage’. World Trademark Review ranks De Brauw Blackstone's IP practice as top-ranked, praising Tobias across the board as "a remarkably strong figure" who specialises in advising multinational corporations and foreign law firms on major trademark litigation.