"Carl Johan af Petersens is the obvious but humble eminence of network market regulations in Sweden who is addressing every issue, no matter how complex, with his razor-sharp analytic skills and ability to articulate the core of a matter." Legal 500, 2025

"Carl Johan af Petersens - is very hands-on and engaged, he is very creative and always does his utmost to find new angles to find a solution to a problem." Legal 500, 2025

"Carl Johan af Petersens is very engaged and creative, and has a deep understanding of our industry and business specifically." Chambers & Partners 2025

"He has a fantastic ability to translate complex issues into simple questions." Chambers & Partners 2025

Carl Johan af Petersens is widely considered one of Sweden's top telecommunications experts, advising prominent clients on nationwide cooperations for 5G roll-outs and EECC implementation. Chambers & Partners 2023

Carl Johan af Petersens is widely considered one of Sweden's top telecommunications experts, advising prominent clients on nationwide cooperations for 5G roll-outs and EECC implementation. Chambers & Partners 2022

Carl Johan af Petersens enjoys an outstanding reputation, with sources describing him as "knowledgeable and one of the best" in the telecoms sector. He advises on a range of commercial and regulatory topics. Chambers & Partners 2021

Carl Johan af Petersens has an outstanding market reputation and receives several endorsements for his expertise in the telecoms space. He handles contentious cases involving the regulatory authority and provides advice on regulatory issues. - Chambers & Partners 2020

"He is a very good lawyer when it comes to expertise, and in regulatory matters he is perceived by his clients as very pragmatic." - Chambers & Partners 2019

Widely regarded as the "go-to guy for complex telecoms issues" in Sweden, Carl Johan af Petersens handles a wide range of regulatory issues in the telecoms sector, acting for a range of international and domestic providers. Clients describe him as "very nice and easy to work with, service-orientated and very communicative" and appreciate that he "always takes the time to understand the business side of regulatory advice and is extremely persistent in his work for clients." - Chambers & Partners 2018

Ranked in Hall of Fame 2018, 2019 and 2020 - Legal 500 

Rankad som ”Star Individual” (Telecommunications) av Chambers Global 2011 och Chambers Europe 2012 - 2020.

Carl Johan af Petersens is a widely celebrated telecoms lawyer, praised for his technical skills. His areas of expertise include telecoms licensing, broadband networks and cable TV and satellite systems, assisting clients with a host of regulatory and contentious issues. - Chambers & Partners 2017

Star individual Carl Johan af Petersens has a wealth of experience representing the whole spectrum of domestic and international TMT companies. Widely recognised for his work in telecoms licensing, mobile communications and broadband networks and services. He also assists with M&A transactions linked with the TMT sector - Chambers & Partners 2016

Carl Johan has noteworthy expertise in telecoms and communication matters, and is considered "number one for regulatory issues." - Chambers & Partners 2015

Carl Johan af Petersens is "one of the best telecoms regulation lawyers in Sweden," according to one market commentator. He represents a range of Swedish and international clients. He is particularly recognised for his academic prowess. - Chambers & Partners 2014

Utsedd till “The Best of the Best” av Euromoney Legal Media Group’s Guide to the World’s Leading Lawyers 2009, 2011, 2013, 2015, 2017 och 2019.