All team members
Alexander Ortlieb
Partner
German Patent Attorney
European Patent Attorney
UPC Representative
Physicist
A large part of Alexander’s work involves prosecuting international, European and German patent and utility model applications. He has particular expertise in conducting opposition proceedings, in particular before the Boards of Appeal of the European Patent Office. He also has wide experience in preparing freedom-to-operate and validity opinions and represents clients in patent litigation matters.
His specialist fields are physics, medical technologies and diagnostics, computer-implemented inventions, mechanical engineering and telecommunications.
"Physicist Alexander Ortlieb is a dab hand with opposition proceedings, while his drafting and prosecution strengths range across medical technologies and diagnostics, computer-implemented inventions and telecommunications. Commercially sensitive, Ortlieb knows how to get the most out of his clients assets."
– IAM Patent 1000, 2023
"Alexander Ortlieb is a solutions- and goal-oriented practitioner who represents his patrons’ interests with precision, evidenced by his ever-increasing tally of victories at the EPO. He handles a significant amount of IP work for medical technology company Brainlab."
– IAM Patent 1000, 2024
"Alexander is a really good patent lawyer. He has really good ideas and quickly grasps topics
technically. You can throw anything at him. He's great at litigation and prosecution, and available at
crazy times in the day. He's really friendly, and has great, open communication skills."
"My main point of contact there is Alexander Ortlieb. He is a very friendly, personable person,
whom you can work well with. Technically he is very flexible. He prepares very well, and works well
under pressure."
– Chambers Germany, 2025
Alexander Ortlieb is highlighted by patrons for being “very intelligent, sharp, open minded and creative in his approach. He is an exceptional attorney who is always professional, ready to help and customer oriented.
– IAM Patent 1000, 2025
- Patent prosecution and portfolio management
- Filing strategies and drafting patent applications
- Opposition, appeal and nullity proceedings
- Patent infringement proceedings
- Freedom-to-operate and validity opinions
- Listed in Handelsblatt as best lawyer of the year 2025 in the categories intellechtual property and litigation
- In the Leaders League Ranking 2025, honoured as "Leading" in the "Patent Prosecution" category and as "Excellentˮ in the "Patent Litigation" category
- Recommended in IAM Patent 1000 “World’s Leading Patent Professionals”, 2022, 2023, 2025
- Listed as "Leading" in the Patent Prosecution category, as "Excellent" in the Patent Litigation category and as "Highly Recommended" in the Healthcare & Pharmaceuticals category in the Leaders League Rankings Germany 2024
- Listed as "Leading" in the Patent Prosecution category, as "Excellent" in the Patent Litigation category and as "Highly Recommended" in the Healthcare & Pharmaceuticals category in the Leaders League Rankings Germany 2024
- Recommended in Handelsblatt | Best Lawyers "Germany's Best Lawyers" 2020, 2021, 2022, 2023, 2024
- Recommended in MIP IP Stars 2016, 2021, 2022, 2023, 2024, 2025
- Recommended in Legal 500 EMEA 2021, 2022, 2023, 2024
- Recommended in Legal 500 Deutschland 2021, 2022, 2023, 2024
- Listed as "Excellent" in the Leaders League Rankings Germany 2022 and 2023 in the categorie Patent Prosecution
- Representation of a prestigious US university before the EPO’s Enlarged Board of Appeal in the G1/16 case, where the Board handed down a landmark decision on the allowability of disclaimers
- German Patent Attorney Association
- epi
- VPP
- GRUR
- AIPPI
- German
- English
