Jonathan Konietz advises in all areas of intellectual property law. He mainly represents clients in patent and utility model disputes. In addition, he advises on employee invention law and on the negotiation and drafting of license and research and development agreements.
Jonathan Konietz's technical specialization includes in particular the fields of telecommunications, IT, electrical engineering, mechanical engineering as well as biotechnology and pharmaceuticals. He has extensive experience in defending against and enforcing standard-essential patents, taking into account FRAND criteria in a national and international context.
Jonathan Konietz was admitted to the bar in 2016. After completing his studies at the University of Düsseldorf, he worked as a research assistant at the Chair of Civil Law and Intellectual Property Law there and, in this context, completed a research stay at Durham Law School (UK) and worked as a guest lecturer at the Université Cergy-Pontoise (FR).
As an attorney-at-law, he was part of the patent litigation group of a well-known IP boutique until mid-2019. He then worked in the patent team of a major international law firm in Munich and London. Since November 2020, he has been part of AMPERSAND's renowned patent law practice.
Language of Proceedings Before the Unified Patent Court (UPC): The Shift Towards English-LEXOLOGY, February 2025
FRAND decision of the UK Court of Appeal disadvantageous for SEP holders. Criticism and outlook - LEXOLOGY, November 2024
Maximizing Evidentiary Efficiencies in Global Patent Litigation - Landslide, American Bar Association, Vol. 15, No. 3, March/April 2023
Law and Practice Germany - Chambers Patent Litigation 2022 Global Practice Guides
Law and Practice Germany - Chambers Patent Litigation 2021 Global Practice Guides
The two most important FRAND-cases at present in Germany and the United Kingdom - Intellectual Property Magazin (Deutscher AnwaltSpiegel), Issue 3/2020
In focus: Protection of secrets in patent infringement proceedings - Intellectual Property Magazin (Deutscher AnwaltSpiegel), Issue 2/2020
Possible amendments to the Patent Act - Intellectual Property Magazin (Deutscher AnwaltSpiegel), Issue 1/2020
JUVE Patent (2025) lists Jonathan Konietz as a "Recommended Individual" for patent litigation and describes him as follows:
"resilient, productive and highly experienced litigator despite his youth"
LEADERS LEAGUE (2025) recognizes Jonathan Konietz as "highly recommended" in the field of patent litigation.
IAM (2025) recognizes Jonathan Konietz as one of the world's leading IP strategists in the IAM Strategy 300 ranking.
IAM (2025) recognizes Jonathan Konietz as one of the world's leading patent experts in the IAM Patent 1000 ranking and describes him as follows:
"Jonathan is an exceptionally skilled and sharp attorney with deep technical expertise. His extensive experience in both defending and enforcing standard-essential patents (SEPs) is invaluable, and he navigates FRAND criteria with precision in both national and international contexts. His knowledge and strategic insight make him a highly reliable partner in complex patent matters, and his commitment to achieving optimal outcomes for his clients is evident in every case. Jonathan is a star at AMPERSAND and a go-to for anyone seeking expert counsel in high-stakes patent litigation."
The Legal 500 (2025) recommends Jonathan Konietz as follows:
"Jonathan Konietz: clever and highly perceptive and willing to go the extra mile."
"Jonathan Konietz is a younger partner in the patent litigation team, but he already has a lot of relevant experience. Unlike many other lawyers in this area, he also aspires to understand all technical details of a case himself. He is happy to receive support from involved patent attorneys, but always with the aim of understanding and mastering all technical details himself, where necessary."
JUVE Patent (2024) lists Jonathan Konietz as a "Recommended Individual" for patent litigation.
IP Stars (Managing IP) honors Jonathan Konietz as Rising Star 2024.
IAM (2024) recognizes Jonathan Konietz as one of the world's leading IP strategists in the IAM Strategy 300 ranking.
LEADERS LEAGUE (2024) honors Jonathan Konietz as "highly recommended" in the field of patent litigation.
IAM (2024) recognizes Jonathan Konietz as one of the world's leading patent experts in the IAM Patent 1000 ranking and describes him as follows:
“Without a doubt, Jonathan stands out as one of the top experts in the field of telecommunications and IT. He possesses an extensive wealth of knowledge and a remarkable knack for unravelling intricate challenges. Jonathan’s professionalism and unwavering dedication to each project is greatly appreciated, as well as his consistency and wholehearted zeal for accomplishing the clients’ objectives. His amiable and collaborative disposition plays a pivotal role in fostering the excellent synergy between the client and himself.”
The Legal 500 (2024) recommends Jonathan Konietz as a core lawyer at AMPERSAND and describes him as follows:
"Jonathan Konietz: Clever, extremely creative, strategic, to the point, extremely perceptive, tactician."
"Jonathan Konietz has outstanding legal and technical expertise. Very committed and competent."
JUVE Patent (2023) lists Jonathan Konietz as a "Recommended Individual" for patent litigation.
IAM (2023) includes Jonathan Konietz in the list of the world's leading IP strategists in the IAM Strategy 300 ranking. The ranking recognizes experts who develop and implement innovative strategies that realize and increase the value of IP portfolios.
IP Stars (Managing IP) honors Jonathan Konietz as a Rising Star 2023.
IAM (2023) recognizes Jonathan Konietz as one of the world's leading patent experts in the IAM Patent 1000 ranking.
LEADERS LEAGUE (2023) recognizes Jonathan Konietz as "highly recommended" for patent litigation.
The Legal 500 (2023) recommends Jonathan Konietz as a core lawyer at AMPERSAND.
IP Stars (Managing IP) honors Jonathan Konietz as Rising Star 2022.
The Legal 500 (2022) highlights Jonathan Konietz's dedication and creativity in patent litigation.
IP Stars (Managing IP) honors Jonathan Konietz as Rising Star 2021.
