Taking a sample of clothing from a store and making something similar with the intention of selling it
Question

                With regard to the ready-made clothing market, what is the ruling on taking a sample of clothing from another store, whether it belongs to a Muslim or to a kaafir, and making similar garments with slight differences in style, for a lower price? What is the ruling on this sample and selling it – is that permissible?.
Praise be to Allah.
    If that involves deceit and cheating the purchaser, who may 
    think that the new product is the same as the old product, or it involves 
    using a registered trademark or trade name, then doing that is haraam, 
    because it involves deceit and transgression against the rights of others. 
    The Islamic Fiqh Council has issued a statement forbidding transgression 
    against the intangible rights of others (such as copyright and patents etc). 
    The text of this statement is as follows: 

    Trade names, business names, trademarks, written works, 
    inventions and patents are all rights that belong to their owners or 
    authors. According to modern customs and usage they have acquired 
    considerable monetary value. These rights are respected in sharee’ah and it 
    is not permissible to transgress against them.

    From Majallat al-Majma’, issue no. 4, volume 3, p. 
    1167. 

    This applies equally to both Muslims and kaafirs who are not 
    at war against Muslims. 

    With regard to kaafirs who are at war against Muslims, 
    although their wealth is not protected by sharee’ah, copying their 
    trademarks and distributing fake goods with these trademarks is a deception 
    of the buyer, because these trademarks may be something that the buyer is 
    looking for in the product. 

    But if the goods are similar in appearance and design, but 
    the trade name is different, then there is nothing wrong with that, subject 
    to the condition that the clothes are not of types that are forbidden (such 
    as clothing that is unique to the kuffaar and distinguishes them from 
    others, or clothing that does not cover the ‘awrah, or clothing that is tight and shows the shape of the woman’s body). 

    And Allaah knows best.