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 about Nike sues MSCHF over Lil Nas X's "unauthorised" Satan Shoes
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 about Four chocolate trademark battles that were decided in court
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 about Ritter Sport wins exclusive right to square chocolate bars over Milka
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 about CN Tower's management claims use of building image is trade mark violation
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 about Banksy launches range of branded merchandise to maintain custody of his name
An EU court has told Adidas it cannot hold a trade mark for the use of three stripes "in any direction". More about Adidas loses bid for three-stripe trade mark in the EU
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 about KitKat loses EU court appeal for four-finger chocolate bar trade mark
Levi's has accused French fashion brand Kenzo of copying the famous red tabs of its jeans. More about Levi's sues Kenzo for trade mark infringement over use of red pocket tab
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 about Camille Walala installs inflatable castle decorated with trademark patterns in London
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 about Poundland set to challenge Toblerone's trademarked chocolate bar shape in court
The blue and white sari famously worn by recently canonised nun Mother Teresa has been trademarked to protect her reputation. More about Design of Mother Teresa's sari trademarked to combat "misuse"
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 about Zaha Hadid Design creates table based on Princess Leia's trademark buns
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 about KitKat denied UK trade mark for four-fingered chocolate bar
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 about Trade mark protection will cost more after Brexit says intellectual property lawyer
News: Apple has trademarked the design and layout of its retail stores, nine years after the first Apple Store opened in Virginia, USA. More about Apple trade marks "distinctive design" of its stores