You can bring a legal action in court (most likely, you'd want to file in what's called "chancery court") for court orders, such as:1) Removing the padlock and allowing you access to your business's belongings;2) Ordering the dissolution of the business and the distribution of its assets.If you are a 50% owner, unless you have an operating agreement which gave your partner the authority to do this, he had no right to unilaterally make a decision like this, deny you access, or impact business operations negatively. You can vindicate your rights, but unfortunately can only do so in court, via a lawsuit.