Sportswear brand Nike is suing New York studio MSCHF over its Satan Shoes, a collaboration with American musician Lil Nas X that customised 666 pairs of trainers with human blood and pentagrams. More
Ritter Sport's recent court victory over Milka is the latest in a series of long-running legal battles to trademark the design of chocolate bars. Here we round up four of the tastiest disputes. More
Swiss chocolate maker Milka cannot make square chocolate bars after Germany's highest court declared the distinctive confectionary configuration is the sole property of Ritter Sport. More
Canadian writer James Bow is facing a legal battle with the management of Toronto's CN Tower, which claims his use of an image of the building on a book cover is a trade mark violation. More
Graffiti artist Banksy has launched his own merchandise line, with items on sale for as little as £10, to protect his brand against a greeting-card company that is trying to "seize legal custody" of his name. More
An EU court has told Adidas it cannot hold a trade mark for the use of three stripes "in any direction". More
Nestlé has lost a long-running legal battle to win the European trade mark for the four-fingered design of its KitKat chocolate bar. More
Levi's has accused French fashion brand Kenzo of copying the famous red tabs of its jeans. More
For this year's London Design Festival, artist Camille Walala has erected a brightly coloured, inflatable castle behind Liverpool Street Station to help city workers de-stress. More
Toblerone diluted its trade mark when it released a savings-driven redesign of its chocolate bar last year, retail chain Poundland is set to argue in the UK courts. More
The blue and white sari famously worn by recently canonised nun Mother Teresa has been trademarked to protect her reputation. More
Zaha Hadid Design's Le-a table takes its corkscrew shape from the classic double-bun hairstyle worn by Princess Leia in Star Wars. More
Nestlé has lost a four-year battle to get the design of its KitKat chocolate bar recognised as a trade mark in the UK. More
Brexit crisis: UK design firms will likely pay more to protect their designs and miss out on new EU-wide patents if the country leaves the European Union, according to a leading intellectual property law firm. More
News: Apple has trademarked the design and layout of its retail stores, nine years after the first Apple Store opened in Virginia, USA. More