How to stop harassing calls and letters of assumption claiming patent infringment?

The only way to stop it is to get a litigating patent attorney to represent you. This is a pay not or pay more later, so do not delay the matter.

Can a corporation require a non-employee co-inventor to assign the corporation the rights to an invention by an employee?

See a Labor Lawyer with knowledge of Intellectual Property issues immediately. Your question is too fact specific and it depends on the contract...

If your product is patentedin the US or Patent Pending ,can another country copy it ? Do you need international patent lawyer?

THERE IS NO SUCH THING AS AN INTERNATIONAL PATENT Your Patent Attorney will apply for a patent in each one of the countries that you wish to...

Is it better to get a provisional patent first for the first year for cutting cost?

The short ansaer is no If costs are your concern the skip altogether the provisional as it is just a place holder . Contact a registered patent...

Patents: Can one use a lengthy PPA, however with many 1-inch high figures on each page, as is for the non-provisional (NPA)

The prior art is like a preamble to place a context for the Examiner. It is not crucial because the Person Of Ordinary Skill In The Art should...

There is no limit to the number of independent claims you may use, if justified. You pay a flat price for 1 to 3 claims and extra for each...

I'm a Russian citisen. Is it possible for me to patent my idea in the US?

Yes, a Russian citizen can apply for a patent in the USA. As to cost, most registered patent attorneys charge by time. Estimates vary but do not...

Do I need to seek counsel to patent an idea?

Do you have to? No A better question is Should I? the answer is a robust YES. Look for a Patent Attorney close to you. An hour of education...

Is the only way to protect an Idea for a new product with a patent?

No, a jewelry may also be protected through copyright and trademark. Yes you should get a design patent, if you consider the design so unique that...

Who can help me license my invention or grow a company around my invention?

You have an idea, you have an invention, or you have an idea that may become an invention? Before you look for help in licensing your...