Steven Tananbaum sued the artist and gallery in April for failing to deliver works he bought in 2014

Acquavella Galleries’ exhibition of the Uruguay-born Modernist is a primer for the uninitiated and a treasury of rarely seen gems

Anny Shaw asks if auction houses and dealers should pay their dues to the artists from whom they profit

Hauser & Wirth will host concurrent exhibitions of the Chinese artist Zeng Fanzhi this autumn in Zurich, London and Hong Kong

The dealer says her artists encouraged the expansion

This will be the first time a major Chinese gallery has opened a space in Europe

Late artist completed six paintings in five weeks, all of which are included in London gallery exhibition

The state-backed fifth edition is biggest ever with 44 galleries across five districts

New space for the Paris dealer consolidates gallery’s position as primary market power in France

The gallerist and patron was a key figure in the city’s art scene for more than 50 years

London dealer Alison Jacques says the photograph was taken from last year's fair and another work was damaged due to temperature fluctuations

Hauser & Wirth show in Zürich includes loans from the Tate, the Stedelijk Museum and the Fondation Dubuffet

We drill down into the big numbers from the Post-Impressionist and Modern sale in New York with Georgina Adam, talk to Professor Rachel Pownall about the wider market and look at a small gallery housed in Piccadilly Circus Tube station.

"In order to bring diversity to our all-white male artist stable, we decided to bring in a few other, slightly more affordable, white male artists."

New York law firm warns galleries that legislation could mean new compliance and reporting regime

"It's a participatory conceptual piece consisting in you giving us lots of money for a commissioned art work and agree not to sue me or the artist should we decide not to deliver it."

The maverick art dealer helped to shape New York’s contemporary art scene by finding and supporting some of today's biggest artists

Smaller galleries are open to subsidies from larger ones but wider issues would remain

US artist tries new techniques and tackles immigration in Naples exhibition

New shows at commercial galleries, from emerging names to rediscovered talent

Commercial and non-commercial enterprises combine as the most important event in the German art calendar gets underway

From a gallery floor-turned-treadmill at Alexander Levy to Aztec inspiration at Barbara Wien

Despite soaring rents in the area, Unit London will open in former Citibank building on Hanover Square in June

New shows at commercial galleries, from emerging names to rediscovered talents

Instead of exhibiting at Art Cologne, the Basel gallery von Bartha will host a show in Mike Meiré's apartment in the city

"We need more support than I can generate via sales alone", says founder

The artist is creating a new work and performance at The Kitchen and launching Mexican gallery Kurimanzutto’s US outpost this month

Why galleries are moving into the West End district’s red-light zone

Jazz musician Melvin Gibbs remembers the Civil Rights Leader’s death and the impact it had on the African American community at Gavin Brown’s Enterprise

Presence of more dealers at the fair signals a comeback in the country’s art market