Apple has won a series of US patent disputes against HTC over the use of image compression technology in the iPhone and iPad.
The Taiwanese giant lodged a complaint with the US International Trade Commission (ITC) last year, stating that Apple had violated four of its patents related to protecting data, storing contact information and managing the phone's power supply, and called for a ban on imports.
However, the US International Trade Commission (ITC) said its investigation into the matter between Apple and S3 Graphics, a unit of Taiwan's HTC, had been terminated, reversing an earlier ruling. In July, an ITC judge had ruled that Apple had infringed some of the patents.
Last month, HTC’s bid to ban imports of Apple products into the US over a series of patent disputes was blocked by authorities.
HTC is not the only firm in dispute with Apple over patents. In August, Apple won the latest battle in its patent war against Samsung devices after a Dutch court ruled in favour of a sales ban on Samsung's Galaxy S, Galaxy S II and Ace smartphones in the Netherlands and possibly another 29 European countries, forcing the company to reorganise its logistics chain in Europe accordingly.
Samsung and its mobile devices have been the subject of an aggressive campaign of litigation by Apple, which has also secured a German embargo on sales of the Galaxy Tab 10.1.
The tablet war has continued to escalate and Samsung is now seeking a ban on sales of iPhone 4S in Australia and Japan.
On 13 October Apple succeeded in gaining a temporary injunction banning the sale of the Samsung Galaxy Tab 10.1 in Australia.
The next day US judged ruled that Samsung's tablet had infringed some Apple patents on its iPad, but said that Apple had to prove the validity of those infringements.
See a table of patent disputes here: