Inside? No. Outside? Maybe, if it's a house, no permission, apt building, likely.
You paid for usage of the space. Landlords will be at a disadvantage in court -- having taken money from a tenant for usage of the space. They might argue the space wasn't for business use, but your lawyer can easily debunk that.
However, for instance, in an apartment building, additional traffic, noise, disruptions, the scale may tip towards the landlord's favor.
Remember though, all legal advice on the internet isn't worth a dime off the internet.
Good luck.