Copyright

Copyright (©) (PROSE: GEOCOMTEX home page, Products, Support Site & FAQs, Recruitment) was a legal right owed to the creator of a work. Violating copyright was illegal. (AUDIO: torchwood_cascade_CDRIP.tor)

The Doctor seemingly had the copyright of the design of their sonic screwdriver (AUDIO: The Quantum Possibility Engine) and, according to Graham O'Brien, the TARDIS as well. (TV: Nikola Tesla's Night of Terror)

History
In 1903, upon meeting Thomas Edison, Graham O'Brien told him that the TARDIS was "copyright: her". (TV: Nikola Tesla's Night of Terror)

On 8 December 1926, when Donna Noble mentioned Murder on the Orient Express to Agatha Christie, she added "Copyright Donna Noble" after the Tenth Doctor reminded her that Christie had yet to write it. She added Miss Marple to the list after inadvertently bringing it up. When the Doctor called out to her, Donna suggested that they could split the copyright before realising that the Doctor had been poisoned. Later, the Doctor shown Donna a copy of Death in the Clouds with a copyright page identifying it as a facsimile edition published in the year 5,000,000,000. (TV: The Unicorn and the Wasp)

In March 2005, after a new webmaster took over the website Who is Doctor Who?, a notice was put up saying that the photographs featured on the site weren't necessarily used under copyright, and while no infringement was intended, the site would continue to use them in the interest of exposing the truth. (PROSE: Dummy Massacre)

Several pages on the GeoComTex website were labelled as "Copyright © Geocomtex" by the mid-2000s. (PROSE: GEOCOMTEX home page, Products, Support Site & FAQs, Recruitment)

In the 82nd century, criminal Marty Mouse had committed breach of copyright. (COMIC: The Shape Shifter)

Also in the 82nd century, the Seventh Doctor claimed to own the copyright of his sonic screwdriver. (AUDIO: The Quantum Possibility Engine)

Undated events
On Kolpasha, copyright theft was a more serious crime than murder. Madlen Xel suspected the Fourth Doctor and Romana II of attempting to steal Dara Clayd's designs. (COMIC: Victims)