"Sometimes fighting has a silver lining, as has been the case for Indian brothers Mukesh and Anil Ambani," the US business magazine wrote about the two siblings in a report on the latest list - 'Billionaire Family Feuds'.
In 2005, the two had a collective net worth of $7 billion, but in the Forbes' March 2007 list of world's richest persons, Mukesh alone was ranked at 14th place with $20.1 billion and younger brother Anil followed at 18th position with a net worth of $18.2 billion, the report said.
"Unable to get along, the brothers began fighting publicly in late 2004 for control of Reliance Industries, one of India's largest conglomerates. The situation became so untenable that their mother Kokilaben brokered a court-approved peace settlement that entailed divvying up the family businesses," the report noted.
"Once-inseparable brothers Mukesh and Anil Ambani fought bitterly for months over control of Reliance Industries, one of India's largest companies, founded by their late father Dhirubhai."
According to Forbes, the bickering is still continuing between the two brothers despite their mother brokering a settlement to divide the family assets way back in June 2005.
Anil has taken Mukesh to court a couple of times, most notably over a crucial gas-supply agreement. The recent court ruling gives the brothers four months to renegotiate a deal."
Still, the fight has not affected the stock prices of their companies, which are continuing to soar and are making them much richer than what they were when the fight first started.
The other billionaire family feuds mentioned in the list include a then "19-year-old member of the Hyatt's Pritzker family, who successfully sued her father and almost a dozen other relatives, and a father and his beauty-queen fifth wife suing his son over the family fortune."
Half of the ten fights are related to the US families, while the Ambani family is the only one from India. There are also feuds involving families in Canada, Germany, Hong Kong and Switzerland.
Forbes has also listed the fight involving late celebrity actress and former Playboy playmate Anna Nicole Smith, who battled her stepson, of much higher age than her, for about a a decade to get the rights over the fortunes of her late husband.
While the case was yet to be resolved, both Smith and her husband died. They were married for just a month. "For these wealthy dynasties, there just doesn't seems to be enough money in the world to convince them to get along. Instead they turn on each other, and very often, take their relatives to court.," the magazine said about the families mentioned in the report.
Among other feuds, Marilyn Carlson Nelson, who runs travel group Carlson founded by her father, is being sued by her son. She has been accused of removing her son from the position of president and chief operating officer, thus ending his aspirations to become the company chief.
Swiss billionaire and celebrity art collector Baron Thyssen-Bornemisza after divorcing his fourth wife gave over his two-billion-dollar empire to his son in 1983, but after about two decades he and fifth wife, a former Miss Spain, filed a suit to get the control back.
After a three-year and 60-million-dollar battle in court, the Baron sought to settle the matter with his son in 2002. Baron died a few months later and the fortune is understood to have been split among various family members.
The magazine, however, said that for some billionaires, the family fights have been painful. According to the report, media baron Sumner Redstone is spending his late years fighting suits filed by his family. He was separately sued by his son and nephew last year for "cheating them out of their share of the family wealth."
"The two days that Brent (son) and Michael (nephew) sued me are two of the saddest days of my entire life," the report quoted Redstone as saying.
