Steve Bing and Elizabeth Hurley rip into his father for attempting to cut son ...

Millionaire businessman Steve Bing has joined forces with his ex Elizabeth Hurley to fire back at his father who is attempting to write their son Damian Hurley out of his trust, according to court papers obtained exclusively by by DailyMail.com.

The filmmaker and actress filed separate petitions this week to object to a motion filed in March on behalf of Dr. Peter S. Bing, who has asked a judge to rule that Steve's two children not be considered beneficiaries to his trust on the basis that they were born out of wedlock.

In addition to sharing his 17-year-old son Damian with Hurley, Steve also has daughter Kira Kerkorian Bing with former tennis player Lisa Bonder. 

The 54-year-old accuses his father Peter of 'coordinating' with Steve's sister Mary Bing to 'orchestrate a massive money-grab to deprive' Kira and Damian of their inheritance and 'thereby increasing—perhaps even doubling—her own children's share of the available fund,' court papers state. 

Steve goes a step further and urges the court to 'penalize' Mary for allegedly violating a stipulation of the trust in her attempts to secure more money for her two children, Lucy and Anton. 

If enforced, the penalty would cost her children their entire inheritance. 

Steve Bing and Elizabeth Hurley shot back at Bing's father Dr. Peter S. Bing for attempting to cut out their son Damian Hurley, 17, out of his trust. Hurley said Peter was 'turning logic on its head' after he argued Damian was not a beneficiary of his trust because he was born out of wedlock

Steve Bing and Elizabeth Hurley shot back at Bing's father Dr. Peter S. Bing for attempting to cut out their son Damian Hurley, 17, out of his trust. Hurley said Peter was 'turning logic on its head' after he argued Damian was not a beneficiary of his trust because he was born out of wedlock 

Dr. Peter Bing (pictured) filed a motion in March seeking for Steve's two children to be ineligible to be beneficiaries to his trust because they were born out of wedlock

Steve (pictured) accuses Peter of 'coordinating' with his sister Mary Bing to 'orchestrate a massive money-grab to deprive' Kira and Damian from their inheritance

Peter Bing (left) had filed a motion in March seeking for Steve's two children to be ruled ineligible as beneficiaries to his trust because they were born out of wedlock. Steve (right) accuses Peter of 'coordinating' with his sister Mary Bing to 'orchestrate a massive money-grab to deprive' Kira and Damian from their inheritance

The trustee for Dr. Peter S. Bing's trust filed papers seeking to exclude Kira and Damian from the trust after Kira, 21, 'demanded' information on the trust in March. 

Peter, who donated $50 million to Stanford University in 2006, established his trust in 1980 to 'benefit [his] future grandchildren', who were born or adopted at a young age by Steve or his daughter Mary, according to court papers. 

However, the new motion attempted to clarify the meaning of grandchild, saying Peter did not intend for children who were born out of wedlock and who didn't live in their parent's home for a significant amount of time as a minor to be beneficiaries. 

Steve's legal team call the petition a 'sham' in their filing and call out Peter for 'all-of-a-sudden' clarifying what he meant by the word grandchild just before the trust expires in October 2020.

Steve's lawyers write: 'Peter Bing now seeks to re-write the Trusts to say that his grandchildren through his son, Steve Bing, are not beneficiaries of the Trusts just because those grandchildren were born out-of-wedlock.

'The Petition not only contradicts the plain terms of the Trusts by distorting the plain meaning of the word ''grandchild'' it also asks this Court to reach an unconstitutional and discriminatory result that flies in the face of the Supreme  Court's longstanding precedent set by Trimble v. Gordon.' 

Steve also blasted Peter's comments made towards Damian. Peter had stated he would not consider even if Steve had a relationship with him because he is nearing adulthood. Peter also claimed that to the best of his knowledge, Steve has 'never met Damian'

Steve also blasted Peter's comments made

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