How long after a company comes out of chapter 11 bankruptcy do they have to cancel their old ticker symbol?

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Also, is there any statue of limitations on something like this? When I purchased the shares in the company the stock value was not 0.0001. The ticker symbol had a much larger monetary value that you paid for the stock. I still have the shares of this company in my account listed under the old ticker symbol worth 0.0001 and the reorganized company is doing great, dealing with millions in profits.