Patchwriting is a careless form of paraphrasing, and is dangerous territory: it can be considered plagiarism even if you credit the source. Patchwriting is essentially “patching” together direct quotes or different pieces of information that are too close to the source. See this example, where the verbatim terms are in quotes, and the structure is very similar to the original text:
Patchwriting may occur when the reader is unfamiliar with the language or vocabulary in a text. The reader takes bits and pieces of the original quote and patches it together with some of his or her own words. It can be a useful way to see the terminology in one’s own writing. However, it should only serve as a way to synthesize the original quote into your own words as part of a rough draft and NEVER in a final copy.