In January 1995, Patarkatsishvili became deputy chief executive with responsibility for finance at Russia's ORT TV. In March – May 2001, he was chief executive of Russia's TV6 channel, which, like ORT, was partly owned by Berezovsky. Early in 2006, he bought out Berezovskys stake in Moscow's independent Kommersant publishing house, which he sold on in August that year to senior Gazprom executive Alisher Usmanov.
In 1997, he oversaw the privatization of the Sibneft oil company in auctions that later seemed to have been fixed. Berezovsky snapped up the stake on offer for a fraction of the market value.
In 2007, numerous allegations of corruption were made against him. He was impeached as president of the Georgian National Olympic Committee, and also quit as a president of Georgian Business Federation. Georgian officials turned largely vocal about Patarkatsishvili's murky past. Tbilisi-based Rustavi 2 TV linked his name with several notorious murders in Russia and Georgia, including the assassination of Vlad Listyev.
In late 2007, he became embroiled in a political scandal after former defense minister Irakli Okruashvili on September 25, 2007 accused Mikheil Saakashvili, the President of Georgia, of planning Patarkatsishvili's assassination. Arrested on corruption charges, however, Okruashvili retracted his accusations against the president, winning release on bail of 10 million Georgian lari (about 6,250,000 USD). He also said that his earlier accusations levelled against Saakashvili were not true and were aimed at gaining political dividends for himself and Badri Patarkatsishvili and at discrediting the President of Georgia. On November 6, Okruashvili, said on Patarkatsishvili's Imedi TV - by then managed by Fox TV's parent News Corporation - that he had been forced into retracting his accusations against Saakashvili by pressure that he endured in prison. Down the line from Munich, he said: "All of those accusations, all of those facts that I brought against Saakashvili, everything I said about him is the plain truth.
On October 29, 2007, he publicly announced his plans to finance ten opposition parties' campaign aimed at holding early parliamentary elections in April 2008. On November 2, 2007, he addressed a large anti-government rally held in downtown Tbilisi and pledged to further support it. He left Georgia for London shortly afterwards. After the demonstration turned violent on November 7, 2007, Georgia's Chief Prosecutor's Office announced that he was suspected of conspiracy to overthrow the government. Nevertheless, he said he would run in the January 5 2008 snap presidential elections under the slogan "Georgia without Saakashvili is Georgia without Terror. Leaders of the major opposition parties distanced themselves from Patarkatsishvili, who had to run as an independent presidential candidate.
On December 24 and 25, 2007, the prosecutor-general's office of Georgia released a series of audio and video recordings of the two separate meetings of the high-ranking Georgian Interior Ministry official Erekle Kodua with Patarkatsishvili and the head of his pre-election campaign Valeri Gelbakhiani. According to these materials, Patarkatsishvili was trying to bribe Kodua to take part in what the Georgian officilas described as an attempted coup d'état on January 6 2008, the next of the scheduled presidential elections. The plan included to stage a mass manifestation against the government and to "neutralize" the Interior Minister Vano Merabishvili. The accusations forced Patarkatsishvili onto the defensive. He confirmed that he met with Kodua in London, but denied that the bribe was in connection to an alleged coup plot and claimed instead that his intention was to uncover what he said were official plans to rig the election. He also confirmed that he offered Kodua "a huge amount of money" in exchange for defecting from the authorities allegedly to avert a possible use of force by the government against the planned January rallies.
On December 28, 2007, Patarkatsishvili announced that he would withdraw his bid for presidency, but would nominally remain a candidate until January 4, 2008. On January 3, 2008, he reversed himself, however, and decided to run in presidential elections. In response, his top campaign official Giorgi Zhvania (brother of the late Prime Minister Zurab Zhvania) resigned, declaring that Patarkasishvili did not have the unquestionable reputation one would expect of a country's president.
The businessman spent his last day in the City of London office of international law firm Debevoise and Plimpton, meeting his business partner Boris Berezovsky, his spokesperson Lord Bell and his lawyer Lord Goldsmith QC, as well as fellow exiles, the Russians Nikolai Glushkov and Yuli Dubov From the City he left for Down Street, Mayfair, to visit Berezovsky's office, and at 7.00 pm was returned to Leatherhead with his Maybach. Shortly after dining, Patarkatsishvili told his family he felt unwell and went upstairs to his bedroom where he was found unconscious after a heart attack.
Preliminary reports indicated a heart attack as the cause of death.According to the first post-mortem tests, the death of Patarkatsishvili appeared to have been from natural cardiac-related causes. According to the pathologist Ashley Fegan-Earl, he could identify a "severity that could have resulted in a sudden and unexplained collapse and death at any time." He also concluded that chest pain that Patarkatsishvili had had and a sudden collapse "were consistent with death due to coronary heart diseases." Patarkatsishvili's father Shalva Patarkatsishvili also died of a heart attack at an early age of 48. The businessman had no history of illness but was reported to have led an unhealthy lifestyle, smoking excessively and taking no exercise. According to Lord Bell, "he [Badri] always looked 10 years older than he was." However, theories of a possible assassination were considered seriously by some. "[A] number of compounds known to be used by the former KGB can induce heart failure, but leave virtually no trace. One is sodium fluoroacetate, a fine white powder derived from pesticide." The British police checked Patarkatishvili's Surrey mansion for radioactive elements but reportedly found none.
Associated Press reported that on December 26 2007, Patarkatsishvili said that he had obtained a tape recording of an official in his homeland's Interior Ministry asking a Chechen warlord to murder the tycoon in London. "I believe they want to kill me," he said. He said the tape had been given to police.
Novaya Gazeta reported the following information. Patarkatsishvili, living in London, was approached by members of the Saakashvili government demanding that he sell his controlling share in the dissident Imedi TV network. Initially, Patarkatsishvili refused, but was then offered an unprecedented deal: exchanging ownership of Imedi for ownership of the entire Georgian railroad system. Being a businessman, Patarkatsishvili reportedly agreed; however, when the Saakashvili side sent him the contract, there was a new clause, which required Badri to invest $2,000,000,000 in the "improvement" of the railroad property. He refused, but died shortly after. Novaya Gazeta's source is one of the lawyers from the legal side of this deal.