The decades-long dispute between the heirs of a Jewish woman who fled Nazi Germany and the Thyssen-Bornemisza Collection Foundation is embroiled in procedural questions about foreign sovereigns’ liabilities in US courts

In 1937 the work, which had belonged to art historian Sophie Küppers, was seized by Nazi authorities and eventually sold to New York collector A. E. Gallatin

A lawyer for the foundation says a review by the Supreme Court of a lower court’s decision would “reaffirm the importance of free artistic expression”

Attorney general claims the auction house created and used tax exemption certificates that falsely presented the buyer as an art dealer in order to dodge payments. Sotheby's says it will continue to contest the case

As a US court issues a decision on the dispute between the Andy Warhol Foundation and photographer Lynn Goldsmith, two lawyers explore past case studies in this legally controversial area

US Treasury Department issues a call for input on forthcoming regulation that aims to counter money laundering

The boutique firm will continue to work from the same offices, but wants to take on riskier contingency cases

Founded by gallerists and lawyers, the venture will provide estate-planning advice—for a fee—to artists and their families

Russian art collector had sued for double dealing and will now appeal decision, while Bouvier plans to launch $1bn countersuit for damages—and write a tell-all book

So far a total of 475 "art market participants" have been registered—but delays mean more are likely to comply in the coming months

A string of court cases have allowed states to claim sovereign immunity when they have used images without permission, giving copyright holders cause for concern and few options for remedy

From face-matching software to watching out for shifty behaviour, here is how you can protect yourself from fraudsters attempting to buy art under a false identity

Lawyers and collectors weigh in on new rule that sets a 30-year limit on claims to property that was stolen by Nazis and Communist leaders

The New York-based gallery sued after US authorities seized a bust of Alexander the Great in 2018. The sculpture's ownership and future remains unresolved

Photographer Lynn Goldsmith says recent Supreme Court ruling on Google supports previous decision that went against the Pop artist's foundation

Businessman behind the Museu Coleção Berardo in Lisbon, one of Portugal's most visited museums, allegedly owes nearly €1bn

In a long-running legal battle, the Shchukin Gallery seeks the return of five paintings worth $63m that the gallery says were taken by a Russian financier

New licensing regulations for cultural property may hamper metal detectorists' ability to sell legitimate finds on the European market

Dispute with Artemus centred on a multimillion-dollar leaseback arrangement involving Keith Haring and Frank Stella works

With interest in non-fungible tokens growing fast, the legal questions are testing the experts

Decision appears to signal that appropriation artists may have to proceed more cautiously

The UK government may make examples of galleries, advisors and auction houses found failing to comply to new laws, so prepare your business with these steps

A 1993 painting of the state’s historic role on the Underground Railroad depicts Black slaves as caricatures, while white abolitionists are idealised

Plus, the story of a notorious forger and artist Collier Schorr on August Sander

The American artist’s sculpture can now no longer be shown in France

An heir of an early owner claims that family members conspired to have it sold without his knowledge

Mysterious case, involving an unpaid bill for Keith Haring and Edvard Munch works, had been running for years

The bronze was taken because German law requires archaeological objects have export licences from the country of origin—but it was only travelling through to Austria from the US

Guy Wildenstein and his nephew were accused of hiding assets worth hundreds of millions but were acquitted in 2017 and 2018—now they are wanted back in court for a third trial

Shchukin Gallery and its lawyers file new lawsuit against Russian financier Rustam Iseev, his lawyer and a New York Supreme Court judge in bid to uncover location of paintings