How Can I Legally Improve a Product I Didn't Create?

Very simple

If you buy a product, you have all the rights to improve/modify it.Because that product is completely yours, you can resell and can have rights to destroy it. so you dont need to worry.

If your customer buy that product and the customer wants you to improve it, you can do it.

Take an example of a car/bike.

There are so much business going on modification/improving the products that meets customer satisfaction.

For consultancy you may contact at waqasali at gmail

answer added!

I'm expecting from your inquiry that when you allude to "the organization," you are alluding to your manager. All in all, would you be able to benefit from your manager's previous protected innovation? That relies upon your manager. A few organizations are amped up for empowering development in their representatives. They may even have a composed approach or something to that affect of income share for new thoughts that representatives acquaint with the organization that are executed. Some, be that as it may, adopt the inverse strategy. In their view, anything that a representative makes at work has a place with the business. All things considered, the organization is giving you an occupation and paying your pay. In return, you are giving your mental aptitude, dedication and exertion (from a certain point of view). Copyright law absolutely underpins this viewpoint. "Work for enlist" decides obviously express that the business (and not the representative) is esteemed the creator of any works made by a worker inside the extent of his or her business. Moreover, if the item is secured under a patent, the patent holder (whom I am expecting isn't you) has the privilege to bar others from making, utilizing or offering the item. In case you're not kidding about seeking after this, completely address a business lawyer to audit any worker manual or get in touch with you may have marked that spreads responsibility for made over the span of your business, decide any characteristics under your state's work laws that may influence your circumstance and get direction on whether your proposed thought would encroach on your manager's protected innovation. Furthermore, regardless of the possibility that "the organization" isn't your manager, despite everything you'll need to address a protected innovation lawyer to investigate whether your proposed thought would encroach on that organization's licensed innovation.

Research towards development of new product from scratch or development of new product from modification of existing product is a continous process. First I have to find a gap in the previously completed research or developed product. It means I have to find out what properties that this product can not deliver but it has potential to deliver after some modifications. I have to make sure that those inteded modifications are not covered by the patent on this product. 

Research how the product was made, find out the disadvantage and advantage, look who will be 

your consumer and knowing of the complete product information, you can start  for advancement

i work hard to improve my product