It’s a natural part of life. You start a business, watch it turn into a billion-dollar enterprise, then leave it and spend your golden years tossing lawsuits back and forth with the company you raised from a pup.

It could happen to any of us. But right now it’s happening to Aubrey McClendon, the founder and former CEO of Chesapeake Energy who left the Oklahoma City company in 2013.

Chesapeake is suing McClendon with the claim he stole company secrets on his way out the door. McClendon has threatened to fire back.

“It is beyond belief that the company that I co-founded 25 years ago and where I worked tirelessly to build it into one of America’s largest and most successful oil and gas producers has now decided to add insult to injury almost two years to the day after my resignation by wrongly accusing me of misappropriating information,” McClendon said in a statement last month.

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